2.20.0.1 : LoTW manual upload hangs if 14 QSO selected

[SP5NZF]

Any suggestions how to fix this ?

CONF:
L4Om ver 2.20, LoTW options checked: -t, -f, automatic
TQSL: 2.5.9 conf 11.18
Win10 64bit 16GB RAM, SQLite

STEPS:
1. Problem became visible last Sunday (after REF Contest) : I believe I've noticed gaps in LoTW listing, so I tried to re-upload manually ca 50 QSOs co fill these gaps via L4O->Utilities->QSLManager->LoTW->Upload and there black Upload window freezes with last text "Executing TQSL with upload" . Till that all fine, no change to certificates/TQSL/... AFTER THIS STEP I forced TQSL to update conf.
2. If I export 55 qso's (including these 14) to ADIF and sign/upload using TQSL - it uploads it OK (although it claims these are dups).
3. If I upload from within L4O these 14 qsos as 2 batches of 7 qsos -> it is Ok and takes several seconds.
4. If I try to make L4O upload same 14 qsos in one batch (same records as in step 3. and part of the upload batch from step 2) - LoTW hangs as described in step 1 forever ( at least 10 minutes).
5. If I close L4O it shuts down orderly (after some timeout)

Help will be appreciated. 73, kuba, sp5nzf

[KI7DAN]

I have the same problem ... I have seen some people have set LOTW to Interactive to fix the problem, but that does not seem to have any effect for me.

[KI5IO]

I have the same problem ... I have seen some people have set LOTW to Interactive to fix the problem, but that does not seem to have any effect for me.

OM,

What version of Log4OM do you have installed?

Have you updated the TQSL APP on your computer?

Is this the "automatic" upload when Log4OM closes down? OR ... is this via the "manual" LOTW upload from the QSL Manager routine in Log4OM ?