I have a project that is mostly S12X assembly language. We compile it with Codewarrior 5.9 IDE, and the underlying development studio version for S12(X) is 5.1, build 10221. Some of the assembly language source files show up with syntax coloring, and a few don't, which drives me a little bit crazy. Both types of files have file ending suffixes of .asm; I can't seem to figure out why one file shows up with all the keywords and comments colored nicely, while the other one is all black. Can anyone suggest a reason why some files don't have syntax coloring active? By the way, for a given file the coloring or non-coloring is consistent all the time - it isn't like you open the file one time and it is syntax-colored and another time it is black. Thank you for any suggestions you may have.