By default, Joomla is using TinyMCE in advanced mode. Even it calls "Advanced Mode", the functions are very basic, it is without any functions to control table, such as adding/deleting rows.
Acutally, TinyMCE has this kind of functions, You do not need to install any new plug-ins. Please go to Administration Panel, Click->Extensions-> Plug-ins-> Plug-in Manager: Editor - TinyMCE -> Select Functionality-> Extended.
There will be an extra row of icons in the TinyMCE.
Virtuemart : vmError: VmTableData Sef Alias in record is missing! Can't save the record with no Sef Alias.
I am using Virtuemart 2.6.0. I have no problems to install it. When I tried to add product categories and product, I got this error :vmError: VmTableData Sef Alias in record is missing! Can't save the record with no Sef Alias..
Finally, I fixed it by upgarding php from 5.2 to 5.4, then it fixed.
I am using PHP more than 10 years now. In the old time, PHP is a very light weighted language. This is just a interpreted language. Nowadays, many new features are introduced in PHP world, such as CSSLESS and object-oriented. They required more memory and CPU processing power. For CSSLESS, this involved a compiler too! First times compiling, that required a lot of memory. Thus, if you build a PHP website, I suggest at least you have 512MB(Well, comparing in windows side, that is not much at all).
I have upgraded my blog from b2evolution 3.x to 5.0.7. I have experienced a lot of performance issues. I did some performance tuning. Maybe they are useful for you. Firstly, I cleaned all unpublished comments. That makes the database much smaller and faster to run. Moreover, I went to System->General, and unchecked Log hits for every public page. That save the execution time for each page. Then I deleted all hit logs in database. For the same reason, I wish the database to be smaller. These information is not very useful. I have other analytically software to track the visitor count. I wish those tips can help you have a better b2evolution.