Random error: Property data for schedule table is not available

[rafa10alvarado]

Good day, Can someone please help me with this? This does not happen in all my drawings, it just randomly happens for no reason, and I'm not sure why.

I open Autocad to a drawing I'm working on and it says this "Property data for schedule table is not available. Displaying last saved data for the entire table." for every single window and door schedule I have.
I will delete all the tables and redo my table, save, open it back up and bam, "Property data for schedule table is not available. Displaying last saved data for the entire table." the same message. So I redid every table for no reason.

I don't understand why this is happening. Please advise.

Thanks,
-Rafa

[ The subject line of this post has been edited for clarity by @pendean Original: Window and Door Schedules]

[r.capper]

If the objects that schedule is scheduling are in a different dwg file add the schedule there, schedule them, select Right Click > Add All Property Sets to populate the objects. 

[rafa10alvarado]

Thank you for your response Mr. Capper,

But the objects are in that drawing. Its the windows and doors. The issue is when I close down the drawing and open it back up the following day to work on it, it gives me that messages. and I am not sure why.

[r.capper]

I would remove the schedule, purge the style (in Style Manager, not AutoCAD Purge), re-add and re-schedule. Suspect the schedule or style are corrupted.