I created a cursor in my application.
as follow: SELECT field1,fields2...... into cursor smf2 readwrite

before running a report on this cursor I wanted to add some fields which I couldnt add them at the begining.

so I did:
m_alias="SMF2"

when the following code executes:
ALTER TABLE DBF(m_alias) ADD COLUMN age c(4)

I get the following error
Structural .CDX file is not found.

after that I dont find the smf2 cursor in the data session anymore.

what am I doing wrong?
any help please