Thanks for the quick answer.
The date at the top of the script is great

.
But the Script doesnt work

It finds my CR2 Files, but doesnt do anything.
The DUAL8298.CR2.log looks like this.
cr2hdr: a post processing tool for Dual ISO images
Last update: d0ac769 on 2014-01-23 10:13:39 UTC by alex:
cr2hdr: experimental white level routine with two separate levels ...
Active options:
--amaze-edge : use a temporary demosaic step (AMaZE) followed by edge-directed interpolation (default)
--cs2x2 : apply 2x2 chroma smoothing in noisy and aliased areas (default)
--compress : Lossless DNG compression
Input file : DUAL8298.CR2
Camera : Canon EOS 5D Mark III
Full size : 0 x 0
Active area : 0 x 0
But i didnt have a 5D Mark III and the files size is not correct to.
If i put my test file into a other paths (C:\Test\) it doesnt work too.
The only way to make it work, is copy the cr2 into my working paths "C:\cr2hdr\".
i added of course a slash to the end of all paths.
Do you have any other ideas?
Thanks a lot
Ronald