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the HM1 update will perform a big database update when you run it.
So ignore any "not responding" error but wait for the program to unfreeze and the database update to finish.
Make sure you have enough free diskspace.
If you have a 40 GB database--> the database update would like 10 GB of free space (to use temporarily)
Run dbcontrolpanel.exe and create a new database, if you get an error upon startup.
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HM2 FAQ -- Quick Start HM2 Guide -- Licensing -- Postgresql issues -- Top 10 Performance Tips