Hooking problem, random crashes

Win 98 SE

nView 2.0

Behaviour of Windows was unstable, from time to time some program crashed, alone or with windows. E.g. mouse move in CHARMAP.EXE causes program crash, in WINPOPUP.EXE Windows crash, some installation programs erect "blue window" and TWAIN scanner driver opens system modal error window. Problem is in nVidia desktop extension - nView. In program was incorrect hook (tweak) - nView item appears in all system menus. Another program which would like to make a hook too, crashes. Solution: don't use nView hooking, i.e. delete register key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nView "rundll32.exe nview.dll,nViewLoadHook".