This version can be installed only over version 2.7 or later. Any version of the program earlier than 2.7 must be completely uninstalled before you start installing 2.7q.
Possible errors after the installation:
Table: LogFiles, Field 'ImportLength2' not found.
You should execute the command PIConsole.exe -convert2gb
Table: TrafficEvents, Field 'BytesOut' not found.
In case with a local database, you should execute the command PIConsole.exe bytesout. In case with Interbase/Firebird, you should execute the script upgrade.sql from the ProxyInspector directory (using SQL server utilities - IBConsole/Interactive SQL).