Export with sdk 4.2.4

Hij I'm trying to export my project with sdk 4.2.4 to also include newer devices and also be able to use the new functionalities.

But when I'm now trying to the build throws an error and when I build for that specific device in debug mode the build finishes just fine, but when I build in release mode it doesn't.

And when I check the error file log.zip it states the following but it makes no sense though.

Compiler internal exceptions: 1
    Generating code for unsupported operation 'null'.
    
com.garmin.monkeybrains.compiler2.CompilerException: Generating code for unsupported operation 'null'.
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.evaluate(FunctionCodeGenerator.java:851)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.evaluate(FunctionCodeGenerator.java:1202)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.evaluate(FunctionCodeGenerator.java:1192)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.processNode(FunctionCodeGenerator.java:732)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.processNode(FunctionCodeGenerator.java:478)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.process(FunctionCodeGenerator.java:329)
	at com.garmin.monkeybrains.compiler2.codegen.FunctionCodeGenerator.process(FunctionCodeGenerator.java:162)
	at com.garmin.monkeybrains.compiler2.CodeGenerator.generateCode(CodeGenerator.java:318)
	at com.garmin.monkeybrains.compiler2.project.ProjectBuilder.runCodeGeneration(ProjectBuilder.java:536)
	at com.garmin.monkeybrains.compiler2.Compiler2.build(Compiler2.java:1501)
	at com.garmin.monkeybrains.compiler2.Compiler2.buildProject(Compiler2.java:709)
	at com.garmin.monkeybrains.Monkeybrains.runCompiler2(Monkeybrains.java:1441)
	at com.garmin.monkeybrains.Monkeybrains.compileApplication(Monkeybrains.java:1419)
	at com.garmin.monkeybrains.Monkeybrains.run(Monkeybrains.java:2066)
	at com.garmin.monkeybrains.Monkeybrains.simpleMain(Monkeybrains.java:272)
	at com.garmin.monkeybrains.Monkeybrains.main(Monkeybrains.java:301)
Compiler Warnings: 66
    WARNING: venu: The launcher icon (30x30) isn't compatible with the specified launcher icon size of the device 'venu' (60x60). Image will be scaled to the target size.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\Helpers.mc:15,12: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\Helpers.mc:20,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:26,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:42,4: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:48,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:52,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:56,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:62,6: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\List.mc:70,6: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:53,12: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:56,14: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:56,14: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:59,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:59,16: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:71,14: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:71,14: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:73,14: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:74,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:74,16: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:133,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\MatchGame.mc:197,4: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\match.mc:57,2: '$.Toybox.ActivityRecording.SUB_SPORT_MATCH' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\match.mc:95,8: Local variable 'i' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\match.mc:131,12: Local variable 'previous_rally' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\lib\match.mc:268,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\modules\AppState.mc:38,8: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\modules\AppState.mc:42,8: '$.Toybox.Application.AppBase.setProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\modules\ScreenRegion.mc:23,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\modules\ScreenRegion.mc:24,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:76,8: Local variable 'clockTime' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:140,8: Local variable 'won_text' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:143,8: Local variable 'score_text' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:146,8: Local variable 'elapsed_time_text' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:148,8: Local variable 'steps_taken_text' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:151,8: Local variable 'score_match_text' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:203,8: Local variable 'delegate' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\GameResultView.mc:212,8: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:28,4: Local variable 'message' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:57,4: Local variable 'textCenter' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:89,4: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:109,4: '$.Toybox.Communications.emptyMailbox' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:111,6: '$.Toybox.Application.AppBase.setProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:123,8: '$.Toybox.Application.AppBase.setProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:124,8: '$.Toybox.Application.AppBase.setProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:156,8: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\InitialView.mc:158,8: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:39,8: Local variable 'yes' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:102,8: Cannot determine if container assignment is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:131,12: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:133,12: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:161,12: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:162,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:163,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:165,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:166,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:230,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:250,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:344,20: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:350,20: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:386,8: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:388,16: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:396,13: Cannot determine if container access is using container type.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:465,8: Local variable 'delegate' is not used.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\MatchViewFocus.mc:474,8: '$.Toybox.Application.AppBase.getProperty' is deprecated.
    WARNING: venu: C:\Users\CorvanDoorn\source\Garmin\garmin-squash-iq\source\views\ResultView.mc:96,6: '$.Toybox.Application.AppBase.getProperty' is deprecated.

The last sdk that does build succesful is 4.1.5 which does not have the functionality I want to add.

Hopefully anybody can shine some light on this for me.