Error 18 question

[JerryR]

I recently upgraded from v3.249 to v4.069 PCWH. About half of the projects created using v3.249 do not complile and generate "Error 18: <Filename.c> Line 0(0,1): File can not be opened." Other, similar error messages referencing line 0 are also generated.

Of course line 0 can not be found by the IDE.

What's up? Any suggestions?

Thanks in advance

[PCM programmer]

I don't have the CCS IDE, but you could try this suggestion:
Delete the old project files. Then create a new project, using the vs. 4
IDE. It's possible that the old project are incompatible and that vs. 4
can't import them for some reason.

In MPLAB, the project files would have these extensions:
.MCP, .MCS, .MCW, .MPT, .TAG, etc.
These are the files other than your .c and .h files. They control the
settings and options of the project. CCS will some similar files, but
possibly with different extensions.

[mickent]

Make sure your "main.c" file is selected. Then click "compile"; then "build all"
_________________
Mick