I cannot import an m3u playlist in Audirvana 3.5.15

These are playlists that I could import in earlier versions. I click on Import Playlist, I get the file selection dialogue, I select the playlist and say Open, but nothing happens.

I have the same problem, version 3.5.15.1

Same problem on mac mini 2012 und macbook pro 2011, 3.5.15 ???

I should add that I am running Mojave 10.14.5 (18F132).

What’s curious is that after I upgraded from an earlier version of Audirvana (I forget which version) import was working properly. But for other reasons I deleted the sqlite databases and forced Audirvana to recreate them. That’s when import stopped working.

I have Audirvana (same version) running on another mac also running Mojave 10.14.5 (18F132). I upgraded that one to the current version of Audirvana, did not do anything to the sqlite databases, and import works.

I work with High Sierra.
Console tells:

standard 10:37:27.306738 +0200 Audirvana SFBrowserCallBack (node = <SFNode 0x6000000f3380>{domain = Network})
standard 10:37:33.570905 +0200 Audirvana Read options: 0 – URL: – purposeID: 6501D41E-88B9-4BAF-8A6E-5D1D9529880D – claimID: 217155F0-C1E1-46CF-BD37-DBFA0D2DAE7C
standard 10:37:33.654506 +0200 Audirvana Claim 217155F0-C1E1-46CF-BD37-DBFA0D2DAE7C granted in client
standard 10:37:33.654535 +0200 Audirvana Claim 217155F0-C1E1-46CF-BD37-DBFA0D2DAE7C invoked in client
standard 10:37:37.376108 +0200 Audirvana Connection to sharingd became invalid
standard 10:37:37.496150 +0200 Audirvana OSErr AERemoveEventHandler(AEEventClass, AEEventID, AEEventHandlerUPP, Boolean)(ficl,askM handler=0x7fff4510f5c5 isSys=NO) err=0/noErr
fehler 10:37:37.496243 +0200 Audirvana errors encountered while discovering extensions: Error Domain=PlugInKit Code=13 “query cancelled” UserInfo={NSLocalizedDescription=query cancelled}

Any Ideas? Thanks

also on latest Mojave, and tried importing playlists for the first time, also no luck.
M3u created in BeaTunes.also tried M3u8