Error Message: Illegal redefinition of variable ZURETVAL. Foxcode table not found, is not correct version or is incompatible.

Showing error in below code:

PUBLIC oldproduct, oldrinward, sale2edit, sale2add, zuretval, oareacode, oareaname, osmancode, osmanname, oaccode, oacname, ocompcode


This Error appear on One computer only. On other computers working without any error


Warm regards,
mk.