I have an issue with an existing application. I have downloaded the latest version of Xojo, 2017r3 and compiled without issue!, However, when I run the application I get the generic Windows error ‘A Problem Caused the Program to Stop Working’
The IDE is 64-bit, but you can still compile 32-bit applications just the same as before. I would suggest to check the build settings to confirm that you are still building 32-bit. If all the settings are OK, you may need to delete the debug build folder manually, and try again. Next, clear the cache. There are a few threads about that topic on the forum.
I assume it runs in debug mode through the IDE without issue?
Do you have any declares in there?
Do you have any hard coded paths in the program that will be wrong when its built (into a different folder)?
Without submitting the project to xojo, I guess the only other course of action would be to comment code blocks out until it runs, then slowly reintroduce them until its working again to narrow down the problem.