How can tell if my installation package is damaged?
The installation packages, that is the download files, for SiteSpinner, Web Engine and WebDwarf are digitally signed. If one of these files has been damaged during the download process or has been tampered with, the digital signature will indicate that.
If it has been damaged, do not use it. It may just not run or it may run but install a faulty program or it may have been infected with a virus. See below for solutions.
To check the digital signature on an installation package, ALL of the following must be found.
- Right-click on the installation package file and select 'Properties' from the pop-up menu.
- In the 'Properties' window find the 'Digital Signatures' Tab. If there is no 'Digital Signatures' Tab the file has been damaged or altered, otherwise continue to the next step.
- In the 'Signature List', you should see 'Virtual Mechanics Inc.' as the 'Name of Signer'. If you do not see that name, the file has been damaged or altered, otherwise continue to the next step.
- You will also see a timestamp date. You may see an email address or the email address may not be available. Either is ok.
- Select the Virtual Mechanics listing and Press the 'Details' button. A 'Digital Signature Details' window will popup.
- In the 'General' tab, at the top, you should see, under the heading 'Digital Signature Information':
"This signature is OK"
If you do not see that, then the package has been damaged or altered.
So to recap:
if there is no 'Digital Signatures' Tab OR
if the 'Name of Signer' is not 'Virtual Mechanics Inc.' OR
if you can't see "This signature is OK"
then something has damaged or altered the package. Do not use it.
If your file is damgaged you will need to download it again. Try using one of our alternate download locations and saving the file to a different place on your PC. That will help to avoid downloading the same copy of the damaged file from your browser's cache.
If that does not help, and you are still getting a damaged file, try deleting the files from you browser's temporary file cache. To do this in Internet Explorer go to the menu 'Tools' >'Internet Options' in the 'General' tab press 'Delete Files...'. This will clear your cache and and any damaged copies of the file. Other browsers will have similar options.