I tried downloading IETester (from: http://www.my-debugbar.com/wiki/IETester/HomePage) using Firefox 4.
At first downloading the exe file only downloaded about 9mb and said it was completed when opened the following message appeared:
Installer integrity check has failed. Common cause include incomplete downloads and damaged media etc.

When downloading the zip file it reached 19mb and appeared to have downloading successfully. However on opening the ZIP a similar error occured.

Additionally, I attempted to download using a third party downloader (Free Download Manager) - it downloaded fully (39mb) but produced the same error on opening.


Many Thanks for your kind assitance,
Chaim