imwrite makes correct file, then errors

I'm using imwrite to write a uint8 to bmp in object oriented matlab. The correct image appears in Windows Explorer, but matlab then throws the following error:

Can't open file "rawcode.bmp" for writing. You may not have write permission.

coming from:

imwrite(~obj.DMcells(1:obj.stepQ0,1:obj.stepQ1),'rawcode.bmp','bmp');

When you try to delete the file after this Windows 7 says matlab is holding it up. XP just says a process still has it. It deletes once matlab is closed.

The file we see has read/write privileges and was tried on a mapped network drive as well as locally in C:\. Windows 7 is successful once, but after that - without restarting matlab - will fail.

Additionally, I've been able to use imwrite in previous projects. Any insight into this problem is greatly appreciated.

EDIT: This is using R2011a

Answer 1

[Friedrich]

Hi,

the only stuff I found is this:

http://www.mathworks.com/support/solutions/en/data/1-APY5VN/index.html

http://www.mathworks.com/support/solutions/en/data/1-DQPRHC/index.html

[Vladimir]

Thanks for looking too. I was really hoping the latter solution would apply here, but unfortunately it doesn't =/