This is the first time I tried GPOSP on a staged craft (oh dumbness!), and I got this when trying to balance it:
[ERR 13:41:42.845] Module GPOSpeedPump threw during OnUpdate: System.ArgumentOutOfRangeException: Argument is out of range. Parameter name: index
at System.Collections.Generic.List`1[PartResource].get_Item (Int32 index) [0x00000] in <filename unknown>:0
at DictionaryValueList`2[System.Int32,PartResource].At (Int32 index) [0x00000] in <filename unknown>:0
at PartResourceList.get_Item (Int32 index) [0x00000] in <filename unknown>:0
at GPOSpeedPump.GPOSpeedPump.Balance () [0x00000] in <filename unknown>:0
at GPOSpeedPump.GPOSpeedPump.OnUpdate () [0x00000] in <filename unknown>:0
at Part.ModulesOnUpdate () [0x00000] in <filename unknown>:0
This is the first time I tried GPOSP on a staged craft (oh dumbness!), and I got this when trying to balance it: