I've already gone through the questions :
Have you integrated Mantis and Subversion?
Best practice for integrating Mantis and Subversion
Integrating google code SVN repository with MantisBT
Unfortunately, my problem is not listed anywhere & hence, I'm posting this question.
I'm using the Mantis 1.2.15, initially while setting I was giving wrong SVN binary path and it used to give me Invalid Path error, but once the path & permissions were correct, it didn't gave me any such error.
I installed SilkSvn as the SVN client to be used by Mantis.
Then I added a remote assembla repository and whenever I click on Import Latest Data or Import Everything I get error on shell_exec line :
I consulted the support & they told me that everyone has been given permission to execute svn.exe and I verified that myself. Also, if there was permission, it would have given error while I gave it the binary path same as earlier when I gave it the wrong binary location.
Can anyone have encountered this issue ? Can you help on what I can try next ?