cannot.mix.updates.for.different.platforms=XCIM0081E: Pak files "{0}" and "{1}" are incompatible, because they might be applicable to different operating systems.
Explanation
The names of the two .pak files indicate that they might be applicable to different operating systems. Maintenance updates for different operating systems cannot be installed on the same taget host.
User response
The updates must be applied separately on different host. Select one of the two and restart the process.