hey Fellippe, the line that kills the conversion seems to be line #615 in the program which is just a plain old "END"
but if you delete this line and save it in QB45 format QB64 has no problem converting it.
Just FYI, not sure if that might help debug the converter or not.
Thanks for looking, Cobalt. I had found the issue to be an unknown token of hex value 8C. Turns out Qarnos had already predicted/found out this would happen but left it commented out because, as comment in code states, he had never "seen one of these in the wild". The fix for this had been planned for years by him.
Using this sample file I also found a bug in the processing of old programs using PCOPY, as the parameters would be converted/read in reverse order. We kill two birds with one stone today.
Next version of QB64 will be a tad smarter in converting from QB4.5 binary files.