loadResource Out Of Memory Error Details: Failed invoking <symbol>

Hi, I was loading drawables with the code below.
var bgBitmap = Ui.loadResource(Rez.Drawbles.bg);
The peak mem used is 43kB but in which case I got an OOM error. Curious about why?
Device: fr245(m) (CIQ 3.3.1)
SDK: 6.3.0