add the path to the directory the library (dmcl40.dll) is placed in to the PATH variable on your system. Then it sould work.
On unix systems, you would have to add it to the LD_LIBRARY_PATH.
Hope this helps.
Thank you for the tips.
The problem is solve but i don't know exactly how.
I have a problem in the bundle with log4j because the bundle : org.ops4j.pax.logging.pax-logging-api only support a few log4j class.