# Functions from function libraries give errors when re-opening project

**URL:** <https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [January 30, 2015, 2:24am UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434 "2015-01-30T02:24:21Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\
**Post date:** [April 1, 2015, 2:56pm UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434/21 "2015-04-01T14:56:52Z")

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Is this in 4.7.3? I set up same thing in a new function library and didn’t get any errors on reopening project. What are you feeding into World Context Object?

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**Author:** ![Hyperloop](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hyperloop/32/1203427_2.png) [@Hyperloop](https://forums.unrealengine.com/u/Hyperloop)\
**Post date:** [April 1, 2015, 4:07pm UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434/22 "2015-04-01T16:07:23Z")

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I am in 4.6.1 at moment. Maybe it’s just some oddness inherent in my particular setup in target blueprint if you can’t reproduce it. I’ll update this thread if I can find solid steps to repro it in a new project in 4.7.3

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**Author:** ![anonymous\_user\_c0687f281](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_c0687f281](https://forums.unrealengine.com/u/anonymous_user_c0687f281)\
**Post date:** [April 23, 2015, 7:51am UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434/23 "2015-04-23T07:51:21Z")

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I got same problem with 4.7.5 (have to recompile function libs each time after opening project). Otherwise I got compile errors on each BP which uses them.

(Cannot attach function lib, get error ‘no such upload’)

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**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\
**Post date:** [April 23, 2015, 5:22pm UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434/24 "2015-04-23T17:22:01Z")

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Hi ,

Would you be able to upload project somewhere like Dropbox or Google Drive and send me a link? You can do so via PM on forums if you need privacy.

This way I can forward it to a dev to take a closer look at what might be causing it. Thanks!

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**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\
**Post date:** [April 23, 2015, 5:23pm UTC](https://forums.unrealengine.com/t/functions-from-function-libraries-give-errors-when-re-opening-project/305434/25 "2015-04-23T17:23:00Z")

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, are you still experiencing this issue with your projects after updating or grabbing commit?

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