DCS Alert: "Unknown column yaddayadda..."

[EJGr.Ost_Chamel]

When generating the next mission for our Guadalcanal campaign, we were four times facing the following sequence of DCS-Alerts:

The german text means (more or less): "The process is not allowed for a closed object"
A mission was generated and it was flyable.
Anyone has an idea, what this means?

Thanks in advance

Chamel

Infos: DCS 3.1.3 , MP 4.373 , MySQL-DB

[IV/JG7_4Shades]

Hmm, bad SQL query, maybe. I'll check it out.