photshop help ASAP!!

im designing a poster for our air show and im having major issues with photo shop!!

i have a huge file
104 MB

my problems is–everytime i click on a layer it highlights it in like a baby blue color–other then the orginal dark blue

and it says quick mask whne i click on the layer and wont allow me to make any changes to the layer i need to make 3 more small changes and i can send this to print!!!

help please anyone know ive worked with photo shop for four years and i have never seen this???:eek:

sounds like it’s in the wrong filetype? either that or you copy/pasted an independent layer?

sounds fishy…

btw
jasc>photoshop