# Failed to open map file **URL:** \ **Category:** World Creation\ **Tags:** unreal-engine, bug-report, question\ **Created:** [February 1, 2016, 8:15pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084 "2016-02-01T20:15:57Z")\ **Posts on this page:** 17\ **Page:** 2
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 8, 2016, 9:57pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/21 "2016-02-08T21:57:48Z")
Ok. How i can save a possition of my assets? If from the beginning I’ll have everything set i lose a lot of time. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 9, 2016, 6:27pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/22 "2016-02-09T18:27:39Z")
The way I would do this is create a new project, then open the windows explorer and navigate to your original project. Open the contents folder and copy all of the folders within to the new projects content folder filepath. Once you open the new project immediately fix up redirectors on the Content Browser and see if this allows you to continue working. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 15, 2016, 6:01pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/23 "2016-02-15T18:01:11Z")
Hi , We have not heard from you in several days. I am marking this as answered for tracking purposes. If you are still experiencing this error, please comment with the requested information. ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 15, 2016, 6:39pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/24 "2016-02-15T18:39:52Z")
I did as you wrote but there is one problem . When I turn on the project i must open level and load my map. How can i set this map as default? ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 15, 2016, 7:58pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/25 "2016-02-15T19:58:37Z")
If you go into Project Settings\>Maps and Modes you should be able to set the default map there. ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 15, 2016, 9:08pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/26 "2016-02-15T21:08:51Z")
Ouch, “Map is saved in newer version” … New project don’t help me 😕 i don’t have idea what i can do now. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 16, 2016, 6:29pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/27 "2016-02-16T18:29:54Z")
Unfortunately it may be a corrupted map file. Try creating a new map and follow the same steps, do you have any errors occur if you use a new, blank map? ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 16, 2016, 8:35pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/28 "2016-02-16T20:35:44Z")
No, when i create new project is all ok. Only my previous project is broken 😕 I heard something about program which uses C++ for change version. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 17, 2016, 4:27pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/29 "2016-02-17T16:27:05Z")
Do you mean the github source branch? We do have a source build if you would like to give it a try. You can find it here: > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... If this is not what you are looking for, can you clarify what you mean? ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 17, 2016, 11:51pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/30 "2016-02-17T23:51:09Z")
That’s it. What do you think about this? This can help me? ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 18, 2016, 4:29pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/31 "2016-02-18T16:29:16Z")
It is worth a shot. I cannot guarantee that it will be a solution to the errors you are seeing, but it is worth taking a chance to find out if it will resolve your error. ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 18, 2016, 5:35pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/32 "2016-02-18T17:35:10Z")
I will try this. but please next ideas from your side . I will be grateful. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 18, 2016, 5:51pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/33 "2016-02-18T17:51:25Z")
Unfortunately, there is not much else that can be tried. If the map file is corrupt the best you can do is use a backup copy if you had one or scrap the map and start over. There aren’t any other options that will feasibly help, even using the source build is a longshot at best and more than likely will not resolve the error. ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [February 18, 2016, 6:24pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/34 "2016-02-18T18:24:54Z")
Ok. Anyway all working good, but only this error is irritating. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [February 18, 2016, 7:37pm UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/35 "2016-02-18T19:37:06Z")
I’m happy to hear the new project is working well. I am marking this as answered for tracking purposes. If another map begins to show the same errors, please comment back and I’ll be happy to take another look. ---
**Author:** ![Game-ism](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Game-ism](https://forums.unrealengine.com/u/Game-ism)\ **Post date:** [August 30, 2016, 1:38am UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/36 "2016-08-30T01:38:18Z")
So I’ve recently had this same error happen in our project, and even if I go to a backup and pull it and try and use it, or re-create the map, the error has come up twice now, on two different versions of the same map. I am using Save-As, saving an existing map as a new map, can save, and edit the map blueprint, but at some point when I save, exit unreal, and come back, I get the “map was saved using a newer version of Unreal” error. ---
**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\ **Post date:** [August 30, 2016, 9:03am UTC](https://forums.unrealengine.com/t/failed-to-open-map-file/346084/37 "2016-08-30T09:03:07Z")
Your map is corrupted. You can not do anything about it. You have two ways : 1. You can create new project and copy content. 2. Open project, click ok on the error. Then open map backup. Unfortunately, every time you will have to do so. [Previous page](https://forums.unrealengine.com/t/failed-to-open-map-file/346084.md?page=1)