This usually happens after installing .Net 3.5 patches or repair .Net 3.5. In order to resolve the problem please follow these steps:
1) Download the attached script FixServiceModel30Reg.txt and save it to the root of c: drive.
2) Rename it to FixServiceModel30Reg.js.
3) Open the Command Prompt window and run the following command: Cscript.exe c:\FixServiceModel30Reg.js
Thanks for the reply Sven. I've downloaded the file to my system directory (i: in my case) and renamed it with the js extension. The SoftMaker Office suite is also installed on this directory. I've entered the command as above, substituting "c" for "i". I get an input error saying the script file can't be found. Any suggestions? Thanks. Dan