Freeze after using file browser dialog box [OS X]

[curtquarquesso]

Whenever I use the save as/open/merge dialog box that pops up when browsing the system, when I complete my action, and click open/save/import/export, or whatever action I'm trying to perform, the program freezes, and can't be revived. I'm new to the program, so I don't know all the ins and outs. It could be user error. If anyone is confused by what I'm talking about, whenever a dialog system browsing box like this: http://i.imgur.com/rS80FET.png is opened, the program is unresponsive as soon as it is closed.

Specs: OS X Yosemite (10.10.4), MacBook Pro (Late 2013), 8GB RAM.

Any help would be greatly appreciated as the program is currently unusable for me.