I didnt read all the entrys here but maybe it helps , i had also when closing a recording crashes
, usally when i took a record in game with 720p more then 30 til 40 minutes
, it was not possible to record longer then that , a real pain in the neck , for me the solution was :
Add to Avast! Virus scanner an exeption in "File/Archiv" protection AND also in "Behavor or Heuteretic Protection" , because Avast! is scanning EVERY "newly generated Files" SO sometimes it takes so long that Action! was crashing because of that ! ... the exeption lines made it work no matter how many time i am recording now , like 1h and 40 minutes game play NO PROBLEM anymore! So is there Avast! in use THIS can be the problem of the crashes when no exeption line a inserted , in the list has to be excluden the Action! folder and then it should work , for me it was
for my english and i hope maybe it helps !