UE4 crashes at 35% on IMac with osx 10.10.4

UE4 crashes at 35% on IMac with osx 10.10.4

here is my crash report.

link text

I have no idea why its crashing, can someone help?

Hey Falray,

Thanks for your report. We have assigned this issue to a member of our support staff, and they will begin investigation as soon as possible. If we are unable to reproduce issue, or we need additional information, our staff member will comment here with additional questions. Otherwise, we will post an ‘Answer’ once we have logged issue in our bug database or we have a solution for it.

In meantime, please be sure to review our suggestions for how to report a bug, and feel free to edit your post if you have additional information to provide:

Thanks!

Hi Falray,

I have reported this issue as JIRA [UE-18959]. When this issue is resolved, an update will be added to this post.

In meantime, following steps from this post on same problem may help:

In regards to this bug, a developer said, "This looks like corrupted Boot.ddc:

(/Users/ ----------------- /Library/Application Support/Epic/UnrealEngine/4.8/DerivedDataCache/Boot.ddc)

…so it’s most likely it encountered an invalid data inside of file and performed a seek outside of its boundaries.

I suggest deleting that file and re-starting editor."

Please try this solution and let us know if you are still experiencing this issue.

Thanks

it worked for me, thanks