I had newest OVI suite for sure, I cant test it on another nokia cause I dont have one I was trying to backup on Win7 64bits and WinXP 32bits, with the same result. On both PCs I got newest version of OVI Suite. I thought that anyone else facing this problem, but its not necesery to backup anymore for me and make OVI working, cause I installed PR 1.3 using apt-get so my data remains on the phone memory (I have to say that I was holding my breath when updateing to not brick my n900 - reflash would erase important files for me).

Update to PR 1.3 was the only reason I want to backup my data.