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Knowledge Base » Excel 2007
Unable to set the installed property of the add-in class

If Excel 2007 crashes while running a RealData product, you may find that whenever you open the same RealData product thereafter, you see this message:

Runtime error 1004: Unable to set the installed property of the add-in class.


The cause of this problem is unknown, but you can work around it as follows:

After seeing the above message, while still in the product, select "Excel Options" from the Office Menu (circle at top left). Select "Add-Ins", then find "Manage: Excel Add-Ins", and click "Go...".

Find the appropriate add-in for the product you are running:

  • for REIA Standard Edition v14: Realdata-Reia14A
  • for Comparison Analysis: Realdata-Ca1A
  • for Portfolio Analysis: Realdata-Pa1A
  • for REIA Lite Edition: Realdata-Lite11A
  • for REIA UltraLite Edition: Realdata-Ul2A
  • for C/I Development v5: Realdata-Cid5A
  • for C/I Development v6: Realdata-Cid6
  • for On Schedule v5: Realdata-Os5
  • for Comparative Lease Analysis v2: Realdata-Cla2A
  • for Personal Financial Statement: Realdata-Pfs4
  • for 1031 Exchange Analysis: Realdata-1031

Click the checkbox for that add-in, and click OK. This should resolve the problem.

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