# unable to open developer 3 capstone project, getting error "Error performing operation" when opening

**URL:** <https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442>\
**Category:** Academy Support\
**Tags:** kx-academy\
**Created:** [March 16, 2026, 9:25am UTC](https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442 "2026-03-16T09:25:42Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![kazizahidali](https://avatars.discourse-cdn.com/v4/letter/k/3d9bf3/32.png) [@kazizahidali](https://forum.kx.com/u/kazizahidali)\
**Post date:** [March 16, 2026, 9:25am UTC](https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442/1 "2026-03-16T09:25:42Z")

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unable to open developer 3 capstone project, getting error "Error performing operation" when opening

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**Author:** ![lkerr2](https://sea2.discourse-cdn.com/flex002/user_avatar/forum.kx.com/lkerr2/32/57_2.png) [@lkerr2](https://forum.kx.com/u/lkerr2)\
**Post date:** [March 16, 2026, 9:33am UTC](https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442/2 "2026-03-16T09:33:11Z")

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Hi @kazizahidali, I was able to open your capstone project okay - are you still having issues?

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**Author:** ![lkerr2](https://sea2.discourse-cdn.com/flex002/user_avatar/forum.kx.com/lkerr2/32/57_2.png) [@lkerr2](https://forum.kx.com/u/lkerr2)\
**Post date:** [March 18, 2026, 10:10am UTC](https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442/3 "2026-03-18T10:10:25Z")

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> [@kazizahidali](#):
>
> unable to open developer 3 capstone project, getting error "Error performing operation" when opening

Hi, I’ve restarted it but if you’re still having trouble I can delete the instance and you can pull a fresh one? You may lose any code you haven’t saved. Let me know if you want me to go ahead and delete it. Thanks, Laura

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**Author:** ![lkerr2](https://sea2.discourse-cdn.com/flex002/user_avatar/forum.kx.com/lkerr2/32/57_2.png) [@lkerr2](https://forum.kx.com/u/lkerr2)\
**Post date:** [March 19, 2026, 12:32pm UTC](https://forum.kx.com/t/unable-to-open-developer-3-capstone-project-getting-error-error-performing-operation-when-opening/15442/4 "2026-03-19T12:32:27Z")

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I’ve deleted your instance. You can pull a fresh sandbox from the KX Academy course page.

Any other issues let me know.

Laura