Board Thread:Suggestions and Ideas/@comment-3496444-20131027145153/@comment-9531161-20131104190856

OK, we've all given you possible solutions to your problem, and you're treating us like dirt. Here's a summary of what we've said; at least one of these things will solve the problem you just stated about only seeing the error for "0.1 seconds":
 * Load the program using the "Write Program" portion of Petit Computer. You know, the giant button that shows up first when you start Petit Computer? Once you're at the black screen, do LOAD "PROGRAMNAME", where PROGRAMNAME is the name of the program. Run the program by typing in "RUN". The program will halt, but the error screen will remain. Now you know where the error is, and you can report it to the developer. This will 100% solve the "can only read the error for 0.1 seconds" problem.
 * You still haven't explicitly told us which program it is, but assuming it's the one that's in the "Topic" list for this thread, Brian (and others) have said that the program works for them. Maybe you're missing some files? Go back to the page where you got the program and see if you're missing a GRP or something.
 * If you read the comments for the program (in particular, http://petitcomputer.wikia.com/wiki/Petit_Computer_Desktop/OS#comm-7847), you'll notice that the person who made the program may have forgotten to include a file. Maybe you should try a different OS, as this one may require editing the code to get it to run properly.