when i launch in simulator everything is fine and properly coloured.but after compiling and running on my ipad, some images become transparent.i wonder what's up with that?

Hi byteblorg, That doesn't sound very good. If it is happening to only random images and not all of them, I would suspect it has something to do with the image used in the document, or possibly a setting of the document itself. It's also a possibility that images in Word Docs just display funny. We're really busy getting buzztouch Server 2.0 ready for tomorrows release, so we'll have to take a look at this further down the road. In the meantime you may want to try to recreate the documents with HTML. I know documents in HTML work very well.