>I think, I found solution of this problem,
>
>The problem is RESOID field in frx file. In VFP9 this field contains Fontcharset value for rows where OBJTYPE is 5 and 8 (text fields and labels). But in earlier VFP versions (for ex. VFP6) this field is empty and VFP crashes. I changed value of RESOID field to my FontCharset (for example to 0 (Western charset)) and everything works fine.

It's not that simple. I created a simple report, blanked out RESOID field in all records and didn't get any crash. Something else may be in play here.