Symptoms
You may receive the following error message when you try to install Parallels Tools:Error 1935. An error occurred during the installation of assembly component {98CB24AD-52FB-DB5F-A01F-C9B3B9A1E18E} HRESULT: 0x080070057
Component may be different.
Resolution
Please try the following solution:1) In Windows: Go to Start Menu > Control Panel > Programs (Add/Remove programs for Windows XP)
2) Click on Microsoft NET Framework 3.5 (2.0, 3.5SP1) to remove it but do not uninstall.
3) Choose 'Repair' and wait till repair is finished.
Now, please try to install Parallels Tools once again.
If you receive Could not access VBScript runtime for custom action error when installing Parallels Tools, please check this Knowledgebase article.