Perhaps this will help:

Program Causes Invalid Page Fault Error in Msvcrt.dll (Q192123)
http://support.microsoft.com/default...;EN-US;Q192123

Also make sure you do not have more than one copy of msvcrt.dll installed on
your system - rename any *not* in c:\windows\system.

Finally, check that the version you have installed is correct as per this
link. It is possible another programme has replaced the correct version of
the DLL with a bad copy or incorrect version.

http://support.microsoft.com/service...n/dllinfo.asp?

Yahoo Companion is known to cause this error sometimes. Instructions on
uninstalling he

How to Uninstall or Turn off the Yahoo! Companion Browser Toolbar (Q303047)
http://support.microsoft.com/default...;EN-US;Q303047


--
Hyperlinks are used to ensure advice remains current
_______________________________________
Sandi - Microsoft MVP since 1999 (IE/OE)
http://inetexplorer.mvps.org/



Cormac wrote:
Hi, the error message is as follows

This program has performed an illegal operation and will be shut down

EXPLORER caused an invalid page fault in
module MSVCRT.DLL at 018f:78015ca2.
Registers:
EAX=0000bc40 CS=018f EIP=78015ca2 EFLGS=00010212
EBX=00000010 SS=0197 ESP=0590e040 EBP=0590e050
ECX=7803a13e DS=0197 ESI=70a9bc40 FS=4357
EDX=0000000f ES=0197 EDI=0590e08a GS=0000
Bytes at CS:EIP:
66 8b 0c 41 f6 c1 04 74 6b 8d 48 d0 3b cb 0f 83
Stack dump:
0590e0f4 70a9f33b 00000000 00000000 0590e0ac 78015c08 0590e088
00000000 0fffffff 00000000 63706b61 0590e088 00000000 00000010
00000001 63706cc8