# Error opening a project

**URL:** <https://forum.inductiveautomation.com/t/error-opening-a-project/6259>\
**Category:** Ignition\
**Created:** [April 18, 2013, 12:57pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259 "2013-04-18T12:57:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jcam](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jcam](https://forum.inductiveautomation.com/u/Jcam)\
**Post date:** [April 18, 2013, 12:57pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259/1 "2013-04-18T12:57:04Z")

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Can you make some sense of the following error? This one project will not open. Other projects open just fine.

[52952.txt](https://us1.discourse-cdn.com/inductiveautomation/original/2X/b/b2d3b5367f3025b1251afd6d67b68e2153edd1d5.txt) (4.37 KB)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 18, 2013, 1:18pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259/2 "2013-04-18T13:18:30Z")

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Are you trying to open it with Java 7?

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<div class="post-metadata">

**Author:** ![Jcam](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jcam](https://forum.inductiveautomation.com/u/Jcam)\
**Post date:** [April 18, 2013, 1:20pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259/3 "2013-04-18T13:20:12Z")

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Yes, but my other projects open fine. What do you suggest?

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 18, 2013, 2:16pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259/4 "2013-04-18T14:16:43Z")

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Ignition 7.2.x isn’t 100% compatible with Java 7 - This particular project is probably using one of the incompatible bits while the other projects aren’t.

You can either:

a) Use Java 6  
b) Upgrade Ignition. I believe the latest 7.3 and beyond are all compatible.

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<div class="post-metadata">

**Author:** ![Jcam](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jcam](https://forum.inductiveautomation.com/u/Jcam)\
**Post date:** [April 18, 2013, 3:01pm UTC](https://forum.inductiveautomation.com/t/error-opening-a-project/6259/5 "2013-04-18T15:01:18Z")

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I went back to Java 6 on that PC and it works fine now. Java 7 did work fine on that project until the latest Java update.

Thanks for the help!