"Cannot save images as JPEG files", "Cannot view source", "Cannot print", and "Cannot download", are all common problems in IE which are usually cleared up by purging the TIF cache.
Here's how to purge the cache manually:
From the IE menu, click on Tools > Internet Options. In the General tab click on the Delete Files in the Temporary Internet files section. You'll be presented with an option to delete the offline content as well...that helps also.
If you want to have this done automatically and your surfing habits are such that you do not need to reuse the existing files in the TIF folders, you can configure IE to purge the files whenever IE is closed. To implement this feature, click on Tools>Internet Options>Advanced [tab]. Scroll down the Settings to the Security section and enable "Empty Temporary Internet Files folder when browser is closed".
Enabling this setting does not affect cookies nor does it delete the offline content.
