I have found that when my test program is <= 4092 bytes long - it works. But if it is >= 4093 bytes it does not work :( I can change size of program with this string:
"code char long_test_array[number_of_bytes];"
My programmer writes ALL binary file - I've checked it. Also binary code DOES NOT changed due to built-in ISP.

To Oleg Sergeev: I suppose you know russian :) Could we discuss it in russian by e-mail or ICQ (English is rather difficult for me to explain situation)? My e-mail is shuric_1@mail.ru, ICQ is 52378806