Ok guys so im in a little bit of a bind i painted my model in zbrush before i unwrapped it and now when i go to unwrapp using UV Master and work on clone it turns white and i dont know how to get it back! someone please help me my deadline is in 3 days!!! 
Here is a link to a UV Master Tutorial. It sounds like you may not have a solid grasp on the work-flow. This link will help a great deal.
http://www.pixologic.com/zclassroom/homeroom/
The tutorial is under the Plugin Tutorials tab.
Don’t panic! Your other tool is still in the Tool palette. Once you have done your UV’s on the clone (turning white is normal) click ‘Copy UVs’ in UV Master menu. Then go to Tool palette and select your original tool then go back to UV Master and click ‘Paste UVs’.
omg you guys just saved my life! no joke thank you so much!
Also one other thing my base mesh is like 5000 points it says but it keeps projecting my high poly on my model so its like 100,000 and i cant make my maps and i don’t know how to lower my sub dev because after i made my map for the model it goes away if you know what i mean and when i turn project off my model is just wireframe and i still cant make maps 
It says paste uv is not availible on poly mesh!!! what should i do? i clicked copy uvs on my clone and when i go back thats what it says when i go to paste?
Originally posted by Tathaniel:
Also one other thing my base mesh is like 5000 points it says but it keeps projecting my high poly on my model so its like 100,000 and i cant make my maps and i don’t know how to lower my sub dev because after i made my map for the model it goes away if you know what i mean and when i turn project off my model is just wireframe and i still cant make maps
What???..I have absolutely no idea what your talking about or what you did to get to that point. Maybe if you post some screenshots, it might help.
Originally posted by Tathaniel:
It says paste uv is not availible on poly mesh!!! what should i do? i clicked copy uvs on my clone and when i go back thats what it says when i go to paste?
Again…I have no idea what you did to get to this point. You obviously screwed something up somewhere along the line. I did give you the proper workflow. Did you watch the UV Master tutorials?