To prevent symbolic links linking back to themselves and causing an infinite loop in the kernel, the kernel stops after a certain number of symbolic links have been followed with ELOOP. This doesn't necessarily mean that there is a loop, but that there are too many symbolic links encountered.
20 pages link to ELOOP:
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()
lib/plugin/WlugLicense.php:111: Warning: in_array() [<a href='function.in-array'>function.in-array</a>]: Wrong datatype for second argument