Hi Marc,
You can use the attached file to fix the metro apps issue. You need to use power shell and run as administrator to execute the file. I am not sure if it is going to work if you apply the fix after LDMS 9.6 SP1 installed but you can try. What I have done was apply the fix on the machine that have LDMS 9.6 agent. After that, I installed LDMS 9.6 SP1 agent on that machine. Hope this can help you.