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S
Stefanie1-Visitor
1-Visitor
August 29, 2025
Question

Issues Opening Old IsoDraw 5 Files in Version 7.4.3

  • August 29, 2025
  • 2 replies
  • 383 views

We're currently using IsoDraw 7.3 and planning to upgrade to version 7.4. During internal testing, we discovered that 89 out of our 214 oldest files (originally created with IsoDraw version 5) cannot be opened in 7.4.3.

The error message reads: “The file is written in an IsoDraw format that I cannot read. You may be able to open the file with a newer version of IsoDraw.”

According to the official release notes, only files created with IsoDraw version 4 are no longer supported—version 5 is not mentioned.

Has anyone experienced a similar issue or found a workaround to open or convert these files? Any tips or suggestions would be greatly appreciated!

2 replies

A
anursinghCommunity Manager
Community Manager
September 30, 2025

Hi @ss_01_12953352,


Thank you for your question. 

Your post appears well documented but has not yet received any response. I am replying to raise awareness. Hopefully, another community member will be able to help.

Also, feel free to add any additional information you think might be relevant. It sometimes helps to have screenshots to better understand what you are trying to do.

 

Regards,

Anurag 

M
MM_106481464-Participant
4-Participant
January 28, 2026

Is it possible that the 89 older files were created in Isodraw CAD Process and your new 7.4.3 license is only for Isodraw Foundation, or your Isodraw startup is set to CAD Process - Never?   I just ran into this a couple weeks ago.  I batch exported drawings created with CAD Process to CGM files on a machine with a CAD Process license so other users with Isodraw Foundation could open and edit the drawings.

 

Regards,

 

Mike

 

 cadprocess_startup.jpg

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