# Help with Sync Failed to Engine Prime
**URL:** https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744
**Category:** Engine DJ
**Created:** [November 4, 2024, 12:51am UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744 "2024-11-04T00:51:43Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@milehighdj](https://discuss.lexicondj.com/u/milehighdj)
#### Post date: [November 4, 2024, 12:51am UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744/1 "2024-11-04T00:51:43Z")
Keep trying to sync Full with Engine Prime and I get Sync Failed Make sure Engine DJ if fully shut down and please try again.
Error: TypeError: Cannot read properties of undefined (reading “beatindex”)
I can to my playlists but not Full because I keep getting this.
Engine 4.1.0
Really need help
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### Author:  [@Christiaan](https://discuss.lexicondj.com/u/Christiaan)
#### Post date: [November 4, 2024, 7:49am UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744/2 "2024-11-04T07:49:12Z")
Hi, this sounds like there is a broken beatgrid somewhere on a track that Lexicon trips on.
Can you upload your Lexicon database & logs? From the Help menu.
Put a link to this topic in the description please.
I’ll find out which track it is for you.
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### Author:  [@milehighdj](https://discuss.lexicondj.com/u/milehighdj)
#### Post date: [November 4, 2024, 9:04pm UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744/3 "2024-11-04T21:04:18Z")
Just uploaded that.
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### Author:  [@Christiaan](https://discuss.lexicondj.com/u/Christiaan)
#### Post date: [November 5, 2024, 1:39pm UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744/4 "2024-11-05T13:39:41Z")
The problematic track is `Westside (Instrumental)`, delete it and it should go further. If you get the error again, try deleting all tracks that have a duration of `0:00`
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### Author:  [@milehighdj](https://discuss.lexicondj.com/u/milehighdj)
#### Post date: [November 8, 2024, 4:58pm UTC](https://discuss.lexicondj.com/t/help-with-sync-failed-to-engine-prime/2744/5 "2024-11-08T16:58:19Z")
Thank you so much.