Hi you normaly get this error when you are trying open a table that is already open in another area or enviroment. you said you get this problem at run time how about with in development area? i suggest you step thought in debug to the error point and make sure you have your set window open so you can keep an eye on your work area.

make sure that you tidy up your work area as you move around your forms, this depends on how you open your tables.

Craig
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> Help I need your help i always encountered this problem during run time
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> regards
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> Joffrey Tiamson
> Makati, Philippines