Ray, My guess is that it is a non-tokenized basic file. That means it's really a text file.
Many basic programs are stored on the internet as text files, but have the *.ba extension. Open the file on a PC in a simple text editor. If you can read the text, then rename it as a *.do file. Load the *.do file into the M100 and then load it into basic, and save it there as a *.ba file. Now it is a proper tokenized basic file, and should not crash the machine. Rob Scrimgeour Victoria, BC
