I've just been testing one of my old shadow mapping demos and wanted to compare the performance using the default integrated graphics option against the high performance Nvidia card option.
When I tried to choose the option by right-clicking the exe file and choosing the appropriate Run with graphics processor option I got the familiar DBPro missing image file runtime error, i.e. "File does not exist at line 31" in this case. However, I get no such error when I run the exe in the usual way by double-clicking. This happens whichever option I choose. A quick test of other DBPro exe files doesn't reproduce the problem. The file in question certainly exists and is a standard 512x512 PNG image.
I've tried recompiling the exe file and the problem persists.
Any ideas what could be wrong?