Especialy for you: here is the error description you mentioned. And the way to fix it:
http://www.8052.com/forum/read.phtml?id=76270

Oleg,
It's frustrating, isn't it, when advice get ignored and the same question get asked again.
Once in a while there is a thread where the original poster fully cooperates and get carried through his problem, these threads are a joy to follow.
Then there are the threads like the above which probably only exist to make us appreeciate the others more

Erik