Hi, After upgrading to 4.1.0 TimageENVect.SavetostreamIEV stopped working. I am getting 'Stream Error' message. Even in your 'Annotation.dpr' project when i try to use SavetostreamIEV it crashes. In the source code it fails when calls this function: // save objects LZStream := TZCompressionStream.Create(Stream, zcDefault, 15);