XF 2.0 Blocking template syntax error when installing a newer add-on on older XF

[oksiak]

Hi
a few days ago by mistake I tried to install @Brad Padgett [BP] Light Switch and Style Chooser add-on, I'm using Xenforo 2.0 and the add-on I was mistakenly trying to install is for xenforo 2.1.

the add-on is not installed and an error has occurred Line 179: Unknown tag fa encountered.

@Brad Padgett contacted me in private messages and sent me some versions for xenforo 2.0 but unfortunately the add-ons he sent me do not work either.

Today when I wanted to install / update s9e Media Sites addon the same error has occurred
So I decided to check and tried to install other add-ons designed for xenforo 2.0 and unfortunately I can't install or even update any add-on because every time the same error occurs - Line 179: Unknown tag fa encountered.

Maybe someone knows how to solve this problem

Thank You

 

[oksiak]

After some testing, it seems as though the trouble you're running into here is actually something we fixed in XF 2.0.10:

Fixed - Do not prevent add-on install if a template modification fails to apply

If there is a syntax error due to a template modification instead of being disabled, the install process fails with a 100% useless error message. Additionally, please include the template modification key for any errors generated when parsing a template so there is some indication of what is...

xenforo.com

If you can upgrade to 2.0.10, then that's what we'd recommend in the first instance.

If you are unable to do that then you will need to do a few things manually.

First of all follow the steps you did above to clear the AddOnData job.

Then run this query:

DELETE FROM xf_template_modification
WHERE addon_id = 'BP/LSSC'

If an entry for the add-on BP/LSSC appears in the xf_addon table then this should be removed as well.

Hopefully that will sort it out.

Thank You @Chris D problem fixed Thank You.

 

[Chris D]

Glad to hear it. We would seriously recommend upgrading though.

You're already running a very old version of XF and there has been lots of significant fixes since then. Plus there's some great improvements in XF 2.1.