An orange screen? That sounds more like a problem with the PC, possibly the graphics card. PoTC generally crashes by freezing, then either crashing out with a Windows message about it stopping working, or getting stuck and needing to be stopped with Task Manager. Sometimes it crashes out with a Windows message about abnormal program termination, usually because of a mistake in the code which results in an "error.log" file being generated. To crash out with an orange screen and the keyboard inoperative would imply a fault in the basic engine, and that hasn't changed for ages.
However, just to be sure, could you say which was the last version you had that worked properly? If it was the version with the 18th December update, I should be able to make an install similar to that as I still have the December version. Then I can do a WinMerge check with an install using the February update and see if there's anything which could make crashing more likely.
Swedish ships in general should not remember you as being pirate, though any which saw you flying a pirate flag will do. Check the "Relations" screen to see if Sweden has turned hostile to any nation, or to you personally. Or, next time a Swedish ship fires at you, check "compile.log", which should show what nation it thinks you are.
However, just to be sure, could you say which was the last version you had that worked properly? If it was the version with the 18th December update, I should be able to make an install similar to that as I still have the December version. Then I can do a WinMerge check with an install using the February update and see if there's anything which could make crashing more likely.
Swedish ships in general should not remember you as being pirate, though any which saw you flying a pirate flag will do. Check the "Relations" screen to see if Sweden has turned hostile to any nation, or to you personally. Or, next time a Swedish ship fires at you, check "compile.log", which should show what nation it thinks you are.