CIQ SDK 8.4.x (Windows): run and install silently fail for Data Field projects (Edge 540)

Summary
On Windows, with Connect IQ SDK 8.4.1, Data Field projects build successfully but cannot be run in the CIQ Simulator or installed on an Edge 540. Both run and install commands fail silently (no error output), and the simulator opens only in idle shell mode with no device window.

Environment

• OS: Windows (10/11)

• SDK: Connect IQ SDK 8.4.1 (Windows)

• Device: Edge 540

• App type: Data Field

Project status

• Project structure is valid (manifest.xml, source/*.mc)

• manifest.xml:

  • type="datafield"

  • correct entry

  • product edge540

• Entry class exists and matches manifest entry

• current-sdk.cfg correctly points to SDK 8.4.1

• connectiq.bat build succeeds with no warnings/errors

Steps to reproduce

1. Create or open a valid Data Field project for Edge 540.

2. Run connectiq.bat build → succeeds.

3. Run any of the following:

   • connectiq.bat run

   • connectiq.bat run -d edge540 -t datafield -p .

   • connectiq.bat install -d edge540

4. CIQ Simulator opens but remains idle (no device window).
   No CLI errors or output are produced.

Expected result

• Simulator launches an Edge 540 device window running the data field, or

• install reports successful installation to the device.

Actual result

• Silent failure: no device window, no installation, no error output.

Notes
This appears to be a regression or tooling issue in SDK 8.4.x on Windows. The same project configuration is valid and builds correctly, but cannot be executed or installed.