# Cannot write to folder

**URL:** <https://forum.inductiveautomation.com/t/cannot-write-to-folder/19730>\
**Category:** Ignition\
**Created:** [September 19, 2018, 11:19am UTC](https://forum.inductiveautomation.com/t/cannot-write-to-folder/19730 "2018-09-19T11:19:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![StefanGronberg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/stefangronberg/32/6288_2.png) [@StefanGronberg](https://forum.inductiveautomation.com/u/StefanGronberg)\
**Post date:** [September 19, 2018, 11:19am UTC](https://forum.inductiveautomation.com/t/cannot-write-to-folder/19730/1 "2018-09-19T11:19:58Z")

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Hi, with the ignition project im working on right now, i keep getting the error  
“Error writing to tag”  
“Cannot write to folder”

The details tab is grayed out and i cannot find the source of this error, i have checked wrapper.log and gcu.log and there is no error relating to this in there.

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**Author:** ![ethomason](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ethomason/32/43338_2.png) [@ethomason](https://forum.inductiveautomation.com/u/ethomason)\
**Post date:** [September 27, 2018, 4:10pm UTC](https://forum.inductiveautomation.com/t/cannot-write-to-folder/19730/2 "2018-09-27T16:10:34Z")

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A bit of a late reply but somewhere you are trying to write to a folder instead of an actual tag. Maybe you are building a dynamic tag path somewhere and getting a null value for the tag name.

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<div class="post-metadata">

**Author:** ![StefanGronberg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/stefangronberg/32/6288_2.png) [@StefanGronberg](https://forum.inductiveautomation.com/u/StefanGronberg)\
**Post date:** [September 28, 2018, 5:19am UTC](https://forum.inductiveautomation.com/t/cannot-write-to-folder/19730/3 "2018-09-28T05:19:57Z")

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Hi.

No, it was an actual tag, that had been working “for ages” (read 2+ years).  
I did a GW backup from production server, and took a copy of the mssql database.  
imported all locally.

Dont know what the actual problem was, but it solved it self somehow. I think i rebooted my computer (and thus the GW), no code what changed from the error above, to it working.