# \[BUG\] Gateway Fails to Start **URL:** \ **Category:** Ignition Early Access\ **Created:** [November 8, 2018, 9:09pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682 "2018-11-08T21:09:47Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![bruce.gitlin](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@bruce.gitlin](https://forum.inductiveautomation.com/u/bruce.gitlin)\ **Post date:** [November 8, 2018, 9:09pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/1 "2018-11-08T21:09:47Z")
I received the following when starting the gateway in Win10, using the download from 11/8: Gateway Startup Failed The Ignition Gateway has failed to successfully start up. Reason: java.lang.lllegalArgumentException:java.io.lOException: com.google.common.coilect.ComputationException: com.inductiveautomation.ignition.common.tags.paths.parser.TagPathFormatException: Token PROPERTY\_SEPARATOR found after property name. Check the logs for more details. ---
**Author:** ![mgross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mgross/32/3311_2.png) [@mgross](https://forum.inductiveautomation.com/u/mgross)\ **Post date:** [November 8, 2018, 10:57pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/2 "2018-11-08T22:57:05Z")
There should be a longer stack trace in logs/wrapper.log. Can you post that? (or the whole wrapper log) ---
**Author:** ![bruce.gitlin](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@bruce.gitlin](https://forum.inductiveautomation.com/u/bruce.gitlin)\ **Post date:** [November 9, 2018, 3:32pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/3 "2018-11-09T15:32:56Z")
[wrapper.txt](https://us1.discourse-cdn.com/inductiveautomation/original/2X/b/b0619c4a6cd17464cf7b14a241b204e5bdf015b1.txt) (241.5 KB) ---
**Author:** ![ggross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ggross/32/12668_2.png) [@ggross](https://forum.inductiveautomation.com/u/ggross)\ **Post date:** [November 9, 2018, 5:14pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/4 "2018-11-09T17:14:37Z")
It looks like your tags conversions are failing during the migration of the datafile to 8. Would it be possible to send me a direct message with the Ignition 7 gateway backup so that we can look at the why the failure is occuring? You can do this by clicking on my username and then clicking the Message button in the upper right of the window when my profile loads. ---
**Author:** ![bruce.gitlin](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@bruce.gitlin](https://forum.inductiveautomation.com/u/bruce.gitlin)\ **Post date:** [November 12, 2018, 4:30pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/5 "2018-11-12T16:30:59Z")
> [@\[BUG\] Gateway Fails to Start](http://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/4): > > It looks like your tags conversions are failing during the migration of the datafile to 8. Would it be possible to send me a direct message with the Ignition 7 gateway backup so that we can look at the why the failure is occuring? You can do this by clicking on my username and then clicking the Message button in the upper right of the window when my profile loads. ---
**Author:** ![bruce.gitlin](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@bruce.gitlin](https://forum.inductiveautomation.com/u/bruce.gitlin)\ **Post date:** [November 12, 2018, 4:31pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/6 "2018-11-12T16:31:41Z")
I think it sent successfully ---
**Author:** ![ggross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ggross/32/12668_2.png) [@ggross](https://forum.inductiveautomation.com/u/ggross)\ **Post date:** [November 12, 2018, 6:59pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/7 "2018-11-12T18:59:00Z")
It doesn’t look like the file came though. I send you a private message with alternate ways to send it. Thanks, Garth ---
**Author:** ![ggross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ggross/32/12668_2.png) [@ggross](https://forum.inductiveautomation.com/u/ggross)\ **Post date:** [December 10, 2018, 8:08pm UTC](https://forum.inductiveautomation.com/t/bug-gateway-fails-to-start/20682/8 "2018-12-10T20:08:58Z")
Bruce, We have made some changes to the tag migration within the last couple weeks. While I am uncertain if the changes will resolve the issues you were seeing, they were focused around issues others have had with the migration of UDTs from 7 to 8. If you continue to see issues, please let us know. Garth