error code: 2 (0x00000002)

Attempting to load Antivirus Pro on a Windows 7 SP1 64 bit desktop. Previously Avast 4 was uninstalled and avastclear was run in Safe Mode twice. After hitting run receive the following error. Any help would be greatly appreciated.

A fatal error has occured when parsing extracted packages. Self-extract installer is corrupted.

Error code: 2 (0x00000002) {The system cannot find the file specified.}

Don’t know what the problem is here. Was able to load a previous version of Avast and let the program update itself. Additionally, we have loaded Avast ProAntivirus from the web site onto Windows 8 32 bit machines. Tried today and received the same error as above.