Solved. Found the install logs. The error was actually different.
I had installed from an .iso file. When I used the Tools menu to reinstall Android packages, it was still trying to access the unrared files in the temp folder. A day had passed by and I had closed winrar.
I shall unlink .iso from Winrar to avoid future issues.
So, reinstalled the whole caboodle again. Everything seems to fine this time. However I am disappointed that for the second time, it lost my settings - Options etc.