Denis,

Most likely you've encrypted APP/EXE included into your project. You may try to exclude it from the project and call it indirectly so it wouldn't get included again.

>Sergey - again thanks as I think you are onto the right track. But not sure how it became encrypted. More important, when I de-select encrytption - it keeps re-selecting that option. Any idea why that should be? Denis
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>>I have never had any trouble compressing my application using my zipping prg (PowerDesk). However, for some reason, the main .exe file (c. 4 mbytes) refuses to compress. I have rebuild the project etc. but it still compress 0%. Any clues! Thanks Denis
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>Maybe your project is encrypted?