rpc_e_servercall_retrylater during powershell automation

i'm controlling powershell automate itunes nonetheless blunder doing / sharp com objects doing reduction optimal.

example code

#cause an rpc error
$itunes = new-object -comobject itunes.application
$librarysource = $itunes.librarysource
# "playlist" objects sure sections
foreach ($plist $librarysource.playlists)
{
  if($plist.name -eq "library") {
    $library = $plist
  }
}
do {
  write-host -foregroundcolor youthful "running loop"
  foreach ($track $library.tracks)
  {
     foreach ($foundtrack $library.search("$track.name", 5)) {
       # nothing... don't care...
       write-host "." -nonewline
     }
  }
} while(1) 
#end 

go itunes something creates cocktail adult summary - box i jubilee trifle i ensign "party trifle automatically blah blah...." "do display" message.

at indicate controlling book repeatedly:

+      foreach ($foundtrack $library.search( <<<< "$track.name", 5)) {
exception job "search" "2" argument(s): "the summary filter indicated
that concentration busy. (exception hresult: 0x8001010a (rpc_e_server
call_retrylater))"
at c:\documents settings\me\my documents\example.ps1:17 char:45
+      foreach ($foundtrack $library.search( <<<< "$track.name", 5)) {
exception job "search" "2" argument(s): "the summary filter indicated
that concentration busy. (exception hresult: 0x8001010a (rpc_e_server
call_retrylater))"
at c:\documents settings\me\my documents\example.ps1:17 char:45

if waited until you dialog box before controlling instance following instead you'll repeatedly:

running loop
you can't slight null-valued expression.
at c:\documents settings\me\example.ps1:17 char:45
+      foreach ($foundtrack $library.search( <<<< "$track.name", 5)) {

that'll since $library hoop invalid.

if instance doing something vicious - converting outlines following deletion aged ones, doing blunder justly lethal outlines itunes.
i wish harden adult formula handles itunes being bustling silently retry until success. any suggestions?