die "\$myalias \& \$mycall are the same ($mycall)!, they must be different (hint: make \$mycall = '${mycall}-2';).\n" if $mycall eq $myalias;
-$lockfn = localdata("cluster.lck"); # lock file name
+$lockfn = "$main::local_data/cluster.lck"; # lock file name (now in local d
if (-e $lockfn) {
open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
my $pid = <CLLOCK>;