uncompress picture objects from ARIS database

Hi, 

again a question from my side. 

In my report I try to add a picture, which is stored as attribute in the database on my selected object. The getting of this object is ok. I have some identifier for the object. 

When uncompress with Packages.com.idsscheer.aris.common.report.AArchivator.uncompress(p_Val), it also throws some kind of error (runs in my catch block).  I cannot get any details for the thrown error. 

Perhaps someone knows a better way to uncompress the object (it is a emf picture), or can help me with this

Thanks a lot 

:-)