# Problem starting the Designer **URL:** \ **Category:** Ignition\ **Created:** [November 29, 2012, 5:21pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497 "2012-11-29T17:21:36Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![jaepark](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jaepark](https://forum.inductiveautomation.com/u/jaepark)\ **Post date:** [November 29, 2012, 5:21pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/1 "2012-11-29T17:21:36Z")
Using version 7.5.4 (b1206) Java 6 on Windows 2008 x64 Server Java 6 on Windows 7 x64 client When I launch the designer I get Error launching application: ValidationException: Checksum mismatch for file “symbolfactory-designer.jar.pack.gz” .7BBDA7E2 != 74F4DE50 Retry Exit I have cleared all java cache and temporary files. ---
**Author:** ![jaepark](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jaepark](https://forum.inductiveautomation.com/u/jaepark)\ **Post date:** [November 29, 2012, 7:01pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/2 "2012-11-29T19:01:37Z")
Just tried opening it again and it worked. I closed it down, and tried again and got the same problem. I am using the “Launch Designer” link from the Ignition server home page. ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/6/6639eea139d37d46969ab4fbf734c6cbdc8fb3c5.png) ---
**Author:** ![jaepark](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jaepark](https://forum.inductiveautomation.com/u/jaepark)\ **Post date:** [November 29, 2012, 7:11pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/3 "2012-11-29T19:11:47Z")
Looks like the checksum is different now. ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/1/124786643d83e1d8f0e56d615795033fbe6a0c04.png) ---
**Author:** ![James.Lorenz](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/james.lorenz/32/3290_2.png) [@James.Lorenz](https://forum.inductiveautomation.com/u/James.Lorenz)\ **Post date:** [November 29, 2012, 7:26pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/4 "2012-11-29T19:26:26Z")
Do you happen to have an anti-virus running? ---
**Author:** ![jaepark](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jaepark](https://forum.inductiveautomation.com/u/jaepark)\ **Post date:** [November 29, 2012, 8:43pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/5 "2012-11-29T20:43:09Z")
I do have ESET running. I’ve tried it with ESET disabled, and still occasionally get the error. It seems to fail 1 out of 10 times now. Before rebooting the server, it wasn’t working at all. [jniwrap.log](https://us1.discourse-cdn.com/inductiveautomation/original/2X/3/38236cfd8778f93e329c273978ebd322512f1520.log) (627 KB) ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [November 29, 2012, 9:00pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/6 "2012-11-29T21:00:43Z")
I would try removing the anti-virus all together to see what results you get. ---
**Author:** ![SamJaimes](https://avatars.discourse-cdn.com/v4/letter/s/a6a055/32.png) [@SamJaimes](https://forum.inductiveautomation.com/u/SamJaimes)\ **Post date:** [February 1, 2013, 10:03am UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/7 "2013-02-01T10:03:43Z")
Why is this happening? ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [February 1, 2013, 2:35pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/8 "2013-02-01T14:35:27Z")
Usually the virus scanner program is scanning the files as they are downloaded and sometimes it takes longer which causes it to time out. ---
**Author:** ![jaepark](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jaepark](https://forum.inductiveautomation.com/u/jaepark)\ **Post date:** [February 1, 2013, 3:15pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/9 "2013-02-01T15:15:11Z")
Is there a specific directory I can exclude from scanning to prevent this? Or increase the timeout value? ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [February 1, 2013, 4:01pm UTC](https://forum.inductiveautomation.com/t/problem-starting-the-designer/5497/10 "2013-02-01T16:01:02Z")
I am not sure. I guess you can try removing the .ignition folder in c:\users\username from the virus scanner.