“Error applying transforms. Verify that the specified transform paths are valid”

The above error may also depends on windows installer version, if windows installer version specified in MSI+MST is higher than windows installer version from the target machine.

Resolution: Observe the target machine windows installer installed version and change according in application (Summery Information Table) With “Minimum windows installer” version.

Note: While creating transforms, under Summery Information Table- (Column -Minimum windows installer), value is updated by installed “Windows Installer version” of machine.