Can you send me the package? Typically this happens when the package contains an "unusual" extension that I haven't seen before. I would be nice if Microsoft actually documented this stuff. You know how to reach me.
I use windows 10 1703 (build 15063.483) and appv_manage 126.96.36.199.
When I try to analyze a package I got the following error:
"An error occurred during analysis. Possibly a bad package."
The package analyzing works with server 2016 and appv_manage 188.8.131.52 - so maybe a local problem?
I tried to enable the "Debug Log Level" - but no output.
I ran DebugView and get the following output:
 onecoreuap\base\appmodel\execmodel\modern\lifetimemanager\plmdata.cpp(733)\modernexecserver.dll!00007FFE5C6DBE83: (caller: 00007FFE5C6BD0B2) ReturnHr(72) tid(1a14) 8002802B Element not found.