I can do scans by going to Avast installation folder and click on ashSimp2.exe, but (ashSimpl.exe Will not run.)
Strange... the skin is not opening...
Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair). You must be connected to the internet while repairing.
Try either to register ACTSKIN4.OCX
Follow the instructions:
Select START > RUN...
Enter the following command:
If you have Windows NT or 2000: C:\WINNT\SYSTEM32\REGSVR32.EXE ACTSKIN4.OCX
If you have Windows 95, 98 or ME: C:\WINDOWS\SYSTEM\REGSVR32.EXE ACTSKIN4.OCX
If you have Windows XP:
C:\WINDOWS\SYSTEM32\REGSVR32.EXE ACTSKIN4.OCXIf you have Windows x64: C:\WINDOWS\SysWOW64\REGSVR32.EXE ACTSKIN4.OCX
Press OK (or Enter).
A message saying that the file was successfully registered should appear...
For some reason, ActiveSkin (the 3rd party library avast uses for skinning) does not seem to be working on your system.