Help - compiler "access violations"

[billvon]

Last week I got a USB demo kit in. We are developing a USB-based application for a truck tracking system. I tried to compile the code on my current version of the compiler; no luck. (Was using 3.243.) I got "Internal Error - Contact CCS LABEL SCR=5327"

I called CCS and got no reply. No suprise there. So I thought upgrading might be a good idea. I upgraded to 3.249 via the website. I am now getting "Access violation at address 0000000. Read of address 0000000" errors, and now nothing will compile at all, even old projects that have never given me trouble before.

Our project is now dead in the water. Tried calling CCS again; no one available. Emailed their tech support, and have heard nothing three days later. Anyone have any ideas? We're getting desperate.
_________________
--bill von

[PCM programmer]

1. Post the filename of the main source file.
2. Post all the #include files that are listed in that main file.
3. Post the PIC that you're using.
4. Post the IDE that you're using. (CCS PCWH or Microchip MPLAB)
5. Post your O/S.

[billvon]

Filename: ex_usb_kbmouse2.c (from the CCS USB demo disk)

Include files:
#include "headerfiles\18F4550.h" (from 3.249 compiler)
#include "headerfiles\pic18_usb.h"
#include "headerfiles\usb_desc_kbmouse2.h"
#include "headerfiles\usb.c"

PIC is the one on the CCS demo board (PIC18F4550)

Using IDE v7.20

OS is WinXP pro
_________________
--bill von

[PCM programmer]

It worked for me. Here is what I did:

Using MPLAB vs. 7.20, I used the MPLAB Project Wizard to create a
project called Ex_usb_kbmouse2 in the c:\Program Files\Picc\Examples
directory. The project window in MPLAB looks like this:

[billvon]

[PCM programmer]

I installed PCH vs. 3.243 and I do get the following error when I compile.