SexLab approach

[outtamercy]

so i was thinking of trying to merge some plugins and looked at the smaller ones. this is one of them but when i checked it for errors i got this: [00:00] Checking for Errors in [05] SexLab Approach.esp [00:00] SLApproach_WalkToPlayer [PACK:050012C9] [00:00] PACK \ Package Data \ Data Input Values \ Value \ PLDT - Location \ Location Value -> <Warning: Could not resolve alias> [00:00] [PACK:05007931] [00:00] PACK \ Package Data \ Data Input Values \ Value \ PLDT - Location \ Location Value -> <Warning: Could not resolve alias> [00:00] PACK \ Package Data \ Data Input Values \ Value \ PLDT - Location \ Location Value -> <Warning: Could not resolve alias> [00:00] PACK \ Package Data \ Data Input Values \ Value \ PTDA - Target \ Target Data \ Target -> <Warning: Could not resolve alias>

 

I don't know what this means or how to fix it.  Can someone please help?