I have edited out the profanity from your post because we do not tolerate such language here.
On the installation issue - I am really sorry to hear you are having difficulties with this, and since this is not an error we have ever encountered before, it looks like it is something quite specific to the concrete machine.
The Telerik.StandaloneUtils assembly is a part of our installer, so when the installer runs it is extracted to the %temp% folder in a directory with a random name, in order to be available. Since it cannot be found by the program, this means that it is not in that folder and there can be numerous reasons for that. The ones I can think of are:
- The user account that is used does not have sufficient permissions to write or read from this folder. If possible, try running the installers as administrator.
- Some security software (e.g., antivirus program), blocks, quarantines or deletes the assembly for some reason. I can assure you that it is not harmful, so you can add an exception for it or temporarily suspend the program.
Since at this point we are only guessing, in case the above ideas do not help, you can go to your account and download and run the standalone *.msi installers for the individual products: http://www.telerik.com/help/aspnet-ajax/introduction-all-radcontrols-from-exe.html. In the end, both the control panel and the web installer do the same.
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