Hello All I just wanted to give you my 2 cents on how I went about installing this product. I know a lot of people have had problems in installing this product and I just want to document what I did to overcome them (This guide is for joomla.1,5x).
1. Error 2006
Error
* Plugin Install: DB function failed with error number 2006
MySQL server has gone away SQL=SELECT `id` FROM `jos_plugins` WHERE folder = 'content' AND element = 'jwsigpro'
SQL =
SELECT `id` FROM `jos_plugins` WHERE folder = 'content' AND element = 'jwsigpro'
* Error Loading ModulesMySQL server has gone away SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 2 AND m.client_id = 1 ORDER BY position, ordering
Now this was the first problem that I en-counted like we all do we:
1. Go to our
Extensions menu
2. Select
install/uninstall
3. Go to the
Unload Package File section and click on the browse button and selected the
plg_jw_sigpro-v2.0.4_j15 zip file to upload.
Now after I did this the error 2006 showed me its ugly face >:(
I looked in the forums for answers to why this was happening, one explanation was that the msql database was at fault but that was not a possibility since other plug-ins worked.
Another suggest was to upload the
plg_jw_sigpro-v2.0.4_j15 zip file via ftp onto the server in which your joomla installation resides on (so this is what I did).
1. I created a folder in my /public_html/ folder and named it v2
(please note that placed the folder where all my other joomla files and folders reside on the root level).
2. used my ftp client to transfer the
plg_jw_sigpro-v2.0.4_j15 zip file to this folder.
when this was done I went to my administrator panel and tried to install the zip file from the v2 directory. IT DID NOT WORK :o
2. xml error
I recieved the following error message
Error! Could not find an XML setup file in the package.
What I then decided to do was to extract the contents of the
plg_jw_sigpro-v2.0.4_j15 zip file in the v2 folder on my server. there extract the contents of the zip file first then upload the files into the v2 folder and try to install it from the v2 directory.
After I did this it worked for me (you try this at your own will I am not responsible if any other outcome arises). 8)
This might be good to highlight in the installation process as an alternative way 
