Can't type anything in xcode. Unknown plugin is installed

I'm using Xcode 4.5 on a system that belonged to a former employe and I can't type. There's a weird rectangle text cursor (instead of the I-beam) blinking and a blank line at the bottom of the workspace that responds to my key strokes in a weird manner. If I press a key the text cursor will just get smaller and the blank line will shot the word -- INSERT --. If i'll type the latter q the blank row wil show the word RECORDING in the blank line. There's also the location path of the file I'm currently on like you see in the picture, that's another "addon" I've never seen before. I've wrote red numbers next to the problems I'm having.