Paulo,
Has the environment information been set to point to the 2.11.1 R installation? On the the Configuration tab under File-> Install and Confiugure R you need to make sure you are pointing to the R directory. I will assume that is done.
Also, you should follow these teps:
If you have R 2.11.1 version and also the relevant packages, you need to ensure the following before configuring PA to work with R.
Before configuring R-2.11.1, you need to set certain environment variables. For example, if you have installed R at C:\Program Files\R\R-2.11.1, then you need to set the environment variables as follows:
R_HOME= C:\Program Files\R\R-2.11.1
R_LIBS = C:\Program Files\R\R-2.11.1\library
Path = existing path; C:\Program Files\R\R-2.11.1\library\rJava\jri; C:\Program Files\R\R-2.11.1\bin
This is not necessary if you install the 2.15.1 version using the "Install R" tab.
On your other concern,
The search bar is working for me. What browser type are you using?
Tony