wpf - Creating BitmapImage throws missing key exception -

i have view displays image it's title , comment alongside it. when load existing images utilize code:

        this.artifactidentity = image.artifactidentity;         this.comment = image.comment;         this.name = image.name;         this.mediaidentity = image.mediaidentity;         this.imagearray = image.image;         image = new bitmapimage();         image.begininit();         image.cacheoption = bitmapcacheoption.none;         image.createoptions = bitmapcreateoptions.ignoreimagecache;         image.streamsource = new memorystream(this.imagearray);         image.endinit(); 

when execute endinit() throw exception missing parameter key. stack trace shows this:

  @ system.collections.hashtable.containskey(object key)   @ system.collections.hashtable.contains(object key)   @ system.windows.media.imaging.imagingcache.removefromcache(uri uri, hashtable table)   @ system.windows.media.imaging.bitmapimage.finalizecreation()   @ system.windows.media.imaging.bitmapimage.endinit() 

so can tell me why getting exception when using code i've seen many others use success , yet exception??? i'm @ loss!

this caused bug in wpf, in bitmapimage.finalizecreation():

if ((createoptions & bitmapcreateoptions.ignoreimagecache) != 0) {     imagingcache.removefromimagecache(uri);  } 

if specify ignoreimagecache, don't load uri, breaks.

just rid of flag; applies when loading urls.