>>Do you create some objects as part of form property reference?
>
>Actually no.
>in the listbox init I have
>IF USED('&zfile')
>USE IN &zfile
>endi
>USE &LD:&zfile
>
>.rowsource="select emas,doc,noun,model,s_n,rec_1297,p_u_date,loc,tin_doc,drmo_date,remarks,rek from &LD:&ZFILE into curs zecu"
>
>Another problem I notice is the when arrowing thru the listbox, it hesitates dramatically and even has two line items highlighted. ugh.

You're using macro when there is absolutely no need for it. I don't know what else may be wrong, but this particular piece of code could be re-written as

&& zfile has the actual name of the table (without the path)
USE IN select(zfile)
USE (LD + ":\" + zfile + '.dbf') alias WorkFile && assuming your DBF is on the root of the drive

.rowsource="select emas,doc,noun,model,s_n,rec_1297,p_u_date,loc,tin_doc,drmo_date,remarks,rek from WorkFile into curs zecu"