Failed to open a Session: NS_ERROR_Failure (0x80004005)

[chaps454]

Virtual box was working just fine until I had to update to the latest OS X Yosemite from Snow Leopard and then had to update virtual box to the latest and greatest. Now when ever I try to open a session I get this error. Can anyone please help me with this! Thanks!

Complete Error Code:

Failed to open a session for the virtual machine Windows XP Home SP3.

Failed to load unit 'cpum' (VERR_SSM_UNEXPECTED_DATA).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}