Thank you for replay, all your advices and reasons and esp. great explanation :-) To date I am using the 3DS format from export from MAX to Poser exclusivelly, but the OBJ may be better solution for some options in the MAXOBJ export dialog to have more control over export by the way, ability to interpret 4 vert poly s like quads (ie conversion of tri to quads) maybe great thing in the MAX usage, when you need to create some low-poly model and polygon numbers quantity is critical. The great disadvantage of MAX is his unability to use 1 quad like 1 face (every quad element is consisted from 2 triangle faces..) I think that I (mybe) doing something wrong in the finalisation of the mesh (perhaps somethinfg related to UVW applying) but when I export like 3DS with checked option "Preserve texture coords" everything is OK. The 3DS is easily importable into Poser and then exportable like correct OBJ yet.

Thank you for all your replies a lot :-) Note that the error was occured after second load of the file. When I loaded the Characters/s from Library 1st time, things were OK. By the way I ve got many memory troubles with my PC after upgrade to Athlon XP2000+ . Although the working was speeded-up, many progs started working pretty strangelly, some apps frozed during loading and some other progs when running. The processor started to freeze at cca 60C and 3rd day of usage totally collapsed. I ve changed procc. back to Duron, but some troubles are continuous, eg. the Poser one mentioned above (I use mainboard MSI K7T266Pro2A).