Darrel,

I suggest that we take this up in private e-mail as we may be getting
off-topic for the PICLIST: as you'll see in a moment, I think I have
pinned this down to a problem with my PC.  For the record:

>How much memory/disk space do you have?
8MB of memory and 200Mb of free disk space.

>What kind of CPU?
TI 486DLC (equivalent to Cyrix 486).

>You're using
>Windows 3.1 by itself (not running under some other operating system
>like).
Correct.

>Did the install work without any errors or messages
>(or is it the install itself that is failing)?
The install worked fine (no error messages).

I tried booting up with minimal AUTOEXEC.BAT and CONFIG.SYS files and
MPLAB started up fine.  I assume there must be some conflict which has
not shown up with other software.  I'll try replacing lines in each file
until the problem re-appears and see what conclusions I can draw.

Thanks for your help so far.
--
Ian Chapman