Have you actually downloaded and tried FlightPlanPro?
EDDC-LKKV
FL100
ABKIS Z715 KULOK L984 OKG
The route has a large overhead (2.4x over GC) but you should be able to get a DCT to the airport from ABKIS.
This one is a bit shorter
FL100
ABKIS1W ABKIS Z715 ANELA L604 RUDNO L132 BEKTO DCT
Or you can be adventurous and file
FL100
ABKIS VFR
which has only a 3% overhead.
All above routes validate for tomorrow 1000.
I suspect you are drawing routes on an IFR chart and trying to file them. That is what is taught in the current JAA IR syllabus. It has not worked in Europe for at least 15 years.