I'm trying to run program on x86 machine and display it on an old Sun machine, but application crashes. Debugging showed that the problem connected to TrueType fonts representation, _XmRendXftFont(rend) is NULL, where rend is rendition got for string with type XmMULTIBYTE_TEXT (with XmCHARSET_TEXT everything is ok).

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7e89b90 (LWP 18461)]
0x05e927c3 in ComputeMetrics (rend=0x9200160, text=0x91fffdc, byte_count=9,
type=XmMULTIBYTE_TEXT, which_seg=3, width=0xb7e8814e, height=0xb7e8814c,
ascent=0x0, descent=0x0, utf8=1 '\001') at XmString.c:6315
6315 asc = _XmRendXftFont(rend)->ascent;

I'm a total beginner at Motif and don't even understand how font is connected with text type or what this type is :) I'll be very grateful for any help. And sorry for my terrible English :)