can't move points

[techs]

I'm running AutoCad 2010 and Carlson 2010 and when I try to move a point I get this error.

Can't open new file C:\Carlson Projects\CRD\OG\3219_TOPO.crd
Error 2: Could not open file: C:\Carlson Projects\CRD\OG\3219_TOPO.crd
It might be read-only or in use by another application or be invalid.
Cannot open coordinate file C:\Carlson Projects\CRD\OG\3219_TOPO.crd

Anyone have any suggestions?

[tstrickland]

1) Close program. Re-open the drawing.
2) If that don't work, go to the crd file, right click, properties, and un-check read only.

[techs]

I've tried those two already. It's the only CRD file that I get that error on. I can go to edit points and change the coordinates and that works. I finally just exported all points out into ascii and then created a new CRD.