# Client launch error! **URL:** \ **Category:** Ignition\ **Created:** [August 10, 2018, 4:27pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198 "2018-08-10T16:27:41Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![AkikRanade](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@AkikRanade](https://forum.inductiveautomation.com/u/AkikRanade)\ **Post date:** [August 10, 2018, 4:27pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/1 "2018-08-10T16:27:42Z")
I’m facing a serious client launching error.;- ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/e/ee0c1a806933bcf9ca7940791001ee2ea2b3b377.png) PLEASE HELP… ITS URGENT… The problem occurred when my C:\ drive went full and I changed my database path to different drive. While restoring the backup, when I launch the client, it shows above error. Ignition v7.9.4 ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [August 10, 2018, 4:34pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/2 "2018-08-10T16:34:42Z")
A NoSuchMethodError typically indicates a version conflict. Check your installed modules on the gateway and make sure that they line up with the versions for your gateway: [https://inductiveautomation.com/downloads/archive](https://inductiveautomation.com/downloads/archive) ---
**Author:** ![AkikRanade](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@AkikRanade](https://forum.inductiveautomation.com/u/AkikRanade)\ **Post date:** [August 10, 2018, 4:43pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/3 "2018-08-10T16:43:58Z")
I have all modules as per 7.9.4’s requirements. Should I upgrade the modules to 7.9.8 compatibility? ---
**Author:** ![Kurt.Larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kurt.larson/32/6426_2.png) [@Kurt.Larson](https://forum.inductiveautomation.com/u/Kurt.Larson)\ **Post date:** [August 10, 2018, 4:48pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/4 "2018-08-10T16:48:24Z")
Do you have any installed modules (Gateway -\> Status -\> Modules) that have an earlier or later version number than the Gateway platform (which is 7.9.4)? ---
**Author:** ![AkikRanade](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@AkikRanade](https://forum.inductiveautomation.com/u/AkikRanade)\ **Post date:** [August 10, 2018, 4:51pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/5 "2018-08-10T16:51:48Z")
After restore Modbus v2 module had downgraded from 7.9.4 to 7.9.0 but I have now installed 7.9.4 compatible module. ---
**Author:** ![Kurt.Larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kurt.larson/32/6426_2.png) [@Kurt.Larson](https://forum.inductiveautomation.com/u/Kurt.Larson)\ **Post date:** [August 10, 2018, 4:55pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/6 "2018-08-10T16:55:03Z")
So all of the modules are now perfectly in line with 7.9.4. Can you remove the .ignition cache folder and then relaunch the client? Follow these steps - [https://support.inductiveautomation.com/index.php?/Knowledgebase/Article/View/112/0/how-to-clear-client-ignition-cache-and-java-cache#clear-client-cache](https://support.inductiveautomation.com/index.php?/Knowledgebase/Article/View/112/0/how-to-clear-client-ignition-cache-and-java-cache#clear-client-cache) ---
**Author:** ![AkikRanade](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@AkikRanade](https://forum.inductiveautomation.com/u/AkikRanade)\ **Post date:** [August 10, 2018, 4:57pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/7 "2018-08-10T16:57:36Z")
I have 2 TB hard drive on my server where C:\ has been allocated 200GB space while E:\ has been allocated with remaining 1.6 TB. Kindly help me configure Store & Forward settings such that any logs beyond a year or two get deleted automatically. Currently those are at default 250MB cache settings, ---
**Author:** ![R.Alamsha](https://avatars.discourse-cdn.com/v4/letter/r/e5b9ba/32.png) [@R.Alamsha](https://forum.inductiveautomation.com/u/R.Alamsha)\ **Post date:** [August 11, 2018, 5:18pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/8 "2018-08-11T17:18:15Z")
> [@AkikRanade](#): > > While restoring the backup, when I launch the client, it shows above error. Ignition v7.9.4 1. Are you able to access the gateway web page?. First check the Modules status page. Final source to sort out the problem is Gateway logs. 2. Install Ignition on a test machine, restore your project and see what happens. 3. Call Ignition support and follow their instruction. ---
**Author:** ![AkikRanade](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@AkikRanade](https://forum.inductiveautomation.com/u/AkikRanade)\ **Post date:** [August 16, 2018, 11:05am UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/9 "2018-08-16T11:05:15Z")
The problem is resolved. There was some issue with Vision module. ---
**Author:** ![alexfediw](https://avatars.discourse-cdn.com/v4/letter/a/e95f7d/32.png) [@alexfediw](https://forum.inductiveautomation.com/u/alexfediw)\ **Post date:** [March 24, 2021, 2:07pm UTC](https://forum.inductiveautomation.com/t/client-launch-error/19198/10 "2021-03-24T14:07:06Z")
Updated link: > **[How to Clear Client (.ignition) Cache and Java Cache](https://support.inductiveautomation.com/hc/en-us/articles/360047596071-How-to-Clear-Client-ignition-Cache-and-Java-Cache)** > > You may be directed by Support to clear Client cache and/or Java cache as part of troubleshooting Client or Designer related issues. This article explains how to do so. > ------------ Table of Cont...