Incorrect path generated by openscholar

Hello

I am very new to openscholar.

I installed the latest version of openscholar - apparently correctly. I installed it in a subdirectory of the root directory.

After entering information (e.g. a bibliographic ref.) the system tries to take me back to the homepage of my personal site.

However, instead of going to http://xyz.com/sub_directory/?q=zzzz it goes to http://xyz.com/?q=zzzz i.e. the subdirectory is not recognised. I have not checked all possible functions. ALso, I have not been able to trace any paths in the drupal setup (cannot seem to find them). This error does not happen all the time.

Any help/hints would be really appreciated.

Andrew