Explorer performed illegal op

[RHall]

I'm trying to add a folder on my C:\ drive. I go to Windows Explorer, click
on File, move the cursor to New....before New expands into its choices, an
error box appears:

EXPLORER
This program has performed an illegal operation and will be shutdown.

I click on "Details" and the first time I get this:

EXPLORER caused an invalid page fault in
module SHDOC401.DLL at 017f:5001f4f8.
Registers:
EAX=0044d5c0 CS=017f EIP=5001f4f8 EFLGS=00010206
EBX=00000000 SS=0187 ESP=02e5efa8 EBP=0200656d
ECX=81ab6f70 DS=0187 ESI=bff772f8 FS=2bbf
EDX=00430000 ES=0187 EDI=80000000 GS=4746
Bytes at CS:EIP:
89 45 f8 74 67 6a 43 8b f8 59 8d 85 b8 fc ff ff
Stack dump:
00456e44 0000072c 00007901 00000000 00000000 0028d008 c0660100 bff52558
717067e4 00000824 00000409 00000001 00000000 00000409 00444124 bff5254c

The next time this happened, "Details" gave me this:

EXPLORER caused an invalid page fault in
module KERNEL32.DLL at 017f:bff7b9f5.
Registers:
EAX=7fc39e61 CS=017f EIP=bff7b9f5 EFLGS=00010202
EBX=013bff88 SS=0187 ESP=01380000 EBP=01380024
ECX=01381df8 DS=0187 ESI=00000001 FS=448f
EDX=00000001 ES=0187 EDI=81ac9370 GS=0000
Bytes at CS:EIP:
56 57 89 65 e8 75 04 33 c0 eb 54 85 c0 74 4b c7
Stack dump:
013bff88 7fc39e61 00000001 013bff88 7fc39e61 01381df8 bffc05b4 bff79250
ffffffff 01381e08 bff7ce23 7fc39e61 00000001 7fc33046 7fc39e61 01381e30

The third time "Details" gave me another module and data.
I've scanned for viruses and ran Ad-aware 6.0 to no avail.
Help! Rex Hall

 

[RHall]

Thanks Henri,
I used the first solution, found two long extensions with 'hotbar' in them,
deleted them and i'm now able to add folders!
I went to the link you furnished to nocrash.com....there is a link to
"PowerScan"....Is Powerscan OK, safe, and all that?? or just another piece
of spyware?? Thanks again, Rex Hall