# Project converted from 4.6.1 to 4.7 crashes on startup **URL:** \ **Category:** Platform & Builds\ **Tags:** startup, bug, unreal-engine, crash, question\ **Created:** [February 25, 2015, 6:42pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102 "2015-02-25T18:42:44Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 25, 2015, 6:42pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/1 "2015-02-25T18:42:44Z")
My Project which runs fine in 4.6.1 crashes on startup in 4.7. More exactly, it crashes on loading of my Map. If I don’t load my map at startup, project does not crash until I either try to open the map or open any blueprint or hit play. Callstack: Callstack Log: Log If it helps I am willing to upload my 4.6.1 project or the converted 4.7 project. ---
**Author:** ![Kenomica](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kenomica](https://forums.unrealengine.com/u/Kenomica)\ **Post date:** [February 25, 2015, 8:45pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/2 "2015-02-25T20:45:06Z")
Exact same issue here. [My post](https://answers.unrealengine.com/questions/170495/47-preview-5-bug-editor-crashes-on-opening-convert.html) ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 25, 2015, 8:50pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/3 "2015-02-25T20:50:36Z")
Good to know I am not the only one with the issue. And sad that Epic was not able to fix it since you posted it more than 2 weeks ago. And even more sad Epic released the “stable” 4.7 even though people can’t convert their projects properly. Some more preview releases would not have hurt. [http://puu.sh/gcwxU/b5b189393f.png](http://puu.sh/gcwxU/b5b189393f.png) ---
**Author:** ![Kenomica](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kenomica](https://forums.unrealengine.com/u/Kenomica)\ **Post date:** [February 26, 2015, 3:54pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/4 "2015-02-26T15:54:01Z")
It is loading a map that also causes my crash, as with yours. Converting my project and having it open a blank map is fine - but open ANY map = crash. I’ve tried everything imaginable. Deleted all UMG widgets, checked every single BP for errors, cloned, convert as copy, convert in place, skip conversion, migrated, used a command prompt to resave packages, etc etc. ---
**Author:** ![anonymous\_user\_6f5a5591](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6f5a5591](https://forums.unrealengine.com/u/anonymous_user_6f5a5591)\ **Post date:** [February 26, 2015, 7:28pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/5 "2015-02-26T19:28:50Z")
Hey guys, I think I have found a solution to a similar problem I was having and it could potentially be a solution for you. Fingers crossed it works because I know how frustrating it can be. > **[UE4 crashes when opening existing map in 4.7.0](https://forums.unrealengine.com/questions/178181/ue4-crashes-when-opening-existing-map-in-470.html)** > > I have had an existing map working fine but when I try and open the map in the new version it just crashes. I have looked at the log but it doesn’t show anything obvious and I was hoping something might appear in the DMP file. I have attached the... ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [February 26, 2015, 11:46pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/6 "2015-02-26T23:46:46Z")
Hey John, I have entered this under UE-11029. I was wondering if you had a chance to go through and try deleting/renaming a bunch of Blueprints or if you’re continuing to work in 4.6.1 for the time being? - ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 27, 2015, 12:16am UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/7 "2015-02-27T00:16:55Z")
Hi , thanks a lot. I don’t really understand your question, why should I delete or rename a bunch of blueprints? ---
**Author:** ![Kenomica](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kenomica](https://forums.unrealengine.com/u/Kenomica)\ **Post date:** [February 27, 2015, 5:56pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/8 "2015-02-27T17:56:22Z")
Still happens in 4.7.1 for me. I will try my BPs but I have a LOT. ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 27, 2015, 6:01pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/9 "2015-02-27T18:01:34Z")
Its entered as “UE-11029” and 4.7.1 unly fixed up to “UE-10826”. I hope there will be a 4.7.2. ---
**Author:** ![Kenomica](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kenomica](https://forums.unrealengine.com/u/Kenomica)\ **Post date:** [February 27, 2015, 6:30pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/10 "2015-02-27T18:30:32Z")
Mine was entered as UE-10157 ---
**Author:** ![anonymous\_user\_7e8ab32e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_7e8ab32e](https://forums.unrealengine.com/u/anonymous_user_7e8ab32e)\ **Post date:** [February 27, 2015, 6:36pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/11 "2015-02-27T18:36:35Z")
I have tried to convert (copy) several earlier projects to 4.7.1 They all hang when loading at 94% which I find curious. I was able to convert a 4.5 project by converting in place. This is a scary thing to do given I have a lot of work into my latest 4.6.1 project. I sure do need a fix! ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 27, 2015, 6:44pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/12 "2015-02-27T18:44:04Z")
I think this is another issue and you should create a separate thread on the answerhub for your problem. ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [February 27, 2015, 6:44pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/13 "2015-02-27T18:44:18Z")
I wonder why they enter the same bug multiple times… ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [February 27, 2015, 11:02pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/14 "2015-02-27T23:02:13Z")
Hey guys, These issues have similar repro steps, but different logs and callstacks. While duplicates do happen from time to time, in this case they were different enough to necessitate separate bug reports. We’re actively working on these issues and thank you for your patience. - ---
**Author:** ![Kenomica](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kenomica](https://forums.unrealengine.com/u/Kenomica)\ **Post date:** [February 28, 2015, 5:20am UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/15 "2015-02-28T05:20:56Z")
That definitely makes sense, thank you. ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [March 12, 2015, 10:44pm UTC](https://forums.unrealengine.com/t/project-converted-from-4-6-1-to-4-7-crashes-on-startup/308102/16 "2015-03-12T22:44:07Z")
Hey Guys, Unless there are further questions in this thread that aren’t being addressed in other threads that have been opened, I’m marking this as answered for tracking purposes. Feel free to comment on the answer if you’d like to re-open it. -.