Hey, this is a nasty bug that happends to me. When I test any map/mod the editor it's OK, but when I test my custom map/mod the testing SCII freezes, only with this map/mod. This hasn't happened to me till today, yesterday it worked really good.
EDIT: I've got something: when I erase every trigger the map works rigth, so the problem must be in some of those triggers.
EDIT2: Think I've solved it, don't know what I've done, I only erase one Map Initialization Event and put a Run Trigger in another Trigger for run the first trigger.