Hello

I've got a question. I want to instal solid work 2012, the student version but when the installation runs i've got an error by 29%

I don't know what i have to do with this error to prevent the error.

(Internal error: The Windows Installer for this product component did not run as expected: RollbackUnReg_DocMgrDLL.9FB07B3D_0B7D_4A2F_82AB_F16B1F24912C.

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