Fatal Error: Capacity of List exceeded

[DG6NFG]

Hi there,
today I experienced a very strange error:

I use my Swisslog Database on two devices, one PC and one Laptop synced via Dropbox. Both are on 5.99f.

On the laptop Swisslog works like normal, but on the PC I receive a strange error (here the german name I see): "Die Kapazität der Liste ist erschöpft (148291876).
Translating like "The capacity of the list is exceeded".
In dead on the PC the DB is not show.

Any ideas ???