Intermittent 406 Error?

[Lara_AScout]

I'm editing my templates, and it had been going along swimmingly, but all of the sudden, when I went to save the changes in one template, it gives me, "Not Acceptable /
An appropriate representation of the requested resource /mybb/admin/index.php could not be found on this server.
/Additionally, a 406 Not Acceptable error was encountered while trying to use an ErrorDocument to handle the request."


I looked up to see if anyone else had had this issue, they had, and they said they edited the .htaccess file.... I did as they said with that, doing,

<IfModule mod_security.c>
# Turn off mod_security filtering.
SecFilterEngine Off

# The below probably isn't needed...
SecFilterScanPOST Off
</IfModule>

I signed out of myBB admin, erased history in the browser, closed the browser, signed back in, did my editing again, tried to save, got the same damn error message. The weird thing is, I have been saving the templates just fine, with no problem, then all of the sudden this occasionally happens, it's really driving me nuts. Any suggestions beyond what I've tried?

[.m.]

mod_security needs to be turned off / related rules should be added at server level.
please contact your web host for fixing it

[Lara_AScout]

mod_security needs to be turned off / related rules should be added at server level.
please contact your web host for fixing it

Thanks. My host says they cannot turn off mod_security for free accounts (which is what I have). They said they can we can turn "off certain rules if they are triggering when they shouldn't be (if they are false positives)". They said they want the full URL of the page I am seeing the Error message at, and the data I'm trying to submit... Well.... it happens with a few of these templates, sooooo... I mean, I'm not sure what to tell them, because I'm sure this might happen with not just that template, you know?

[.m.]

^ white listing rules may be added to the admin folder [complete folder]

or they can check the error log to trace the triggering URLs & add relevant rules