Intellij IDEA 14.1 makes whole project read only

Sometimes for some reason, Intellij locks down my whole project. All folders become read only and I have to manually click on each folder and make it writable again, but this only lasts whilst the project is open. If I reopen the project the folders are read only again. This is massively frustrating. Looking at windows folder security rights everything seems fine and I am able to manually create files, but when I create anything using Intellij in said project folders it doesnt want to let me. Anyone maybe had the same problem and know what might be the cause of this or how I can remidy this.