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Associate
September 18, 2025
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CubeMX v6.15.0 can't open old ioc

  • September 18, 2025
  • 6 replies
  • 533 views

Hello,

I recently updated my CubeMX version from v6.14.1 to the latest, and am no longer able to open the .ioc file. Selecting "continue", results in attempting to unzip DB.6.0.141.tar.bz2 where it hangs until failing.

Selecting "migrate" results in the following error, "Range [14, 2) out of bounds for length 2".

My team is seeing this issue on Windows and Linux.

Best answer by STTwo-32

Hello @bryanwebb 

Those behaviors are escalated internally for correction (under internal tickets number 217885 and 214520). For the Continue option, there is no workaround currently, but it will be solved on the future. For the Migration option, i suggest you to

  • Open the IOC file with a text edito
    • Delete all references to "MMTAppReg" (from line 57 to line 90 on your attached .ioc file) STTwo32_1-1758270714628.png
  • Modify "MMTAppRegionsCount=4" to "MMTAppRegionsCount=0" (line 91 of your attached .ioc file)STTwo32_2-1758270886910.png
  • Reopen the IOC file with STM32CubeMX 6.15.0 

STTwo32_5-1758271038909.png

 

Best Regards.

STTwo-32

6 replies

bryanwebbAuthor
Associate
September 18, 2025

Sorry, forgot to mention that this is for the WB55REV7 and we have no issues when creating a new project from scratch.

STTwo-32
Technical Moderator
September 18, 2025

Hello @bryanwebb 

Could you please add your .ioc file here.

Best Regards.

STTwo-32

bryanwebbAuthor
Associate
September 18, 2025

ah yes, sorry about that

STTwo-32
STTwo-32Best answer
Technical Moderator
September 19, 2025

Hello @bryanwebb 

Those behaviors are escalated internally for correction (under internal tickets number 217885 and 214520). For the Continue option, there is no workaround currently, but it will be solved on the future. For the Migration option, i suggest you to

  • Open the IOC file with a text edito
    • Delete all references to "MMTAppReg" (from line 57 to line 90 on your attached .ioc file) STTwo32_1-1758270714628.png
  • Modify "MMTAppRegionsCount=4" to "MMTAppRegionsCount=0" (line 91 of your attached .ioc file)STTwo32_2-1758270886910.png
  • Reopen the IOC file with STM32CubeMX 6.15.0 

STTwo32_5-1758271038909.png

 

Best Regards.

STTwo-32

bryanwebbAuthor
Associate
September 22, 2025

Thanks, that solved the issue

Technical Moderator
November 17, 2025

Hello @bryanwebb 

These issues are resolved in the latest release of STM32CubeMX v6.16.0.

Thank you for your contribution.

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"
bryanwebbAuthor
Associate
November 17, 2025

Great! Thanks for the follow-up