1624 (ERROR_INSTALL_TRANSFORM_FAILURE) is a Windows Installer error related to transforms.

Possible causes (but not exclusive):

• MST file is missing (or misspelled)
• MST file is not valid (mst internal errors)
• MST file is corrupted

Solutions:

• Make sure the command line points to the correct location of the MST and that the name is correct
• Check for MST internal errors if you’ve edited it yourself
• Try to redownload the MST file, in case it might be corrupted