Enter-PSSession is not working in my Powershell script

Not sure if it is a timing issue. I suspect it’s more like Enter-PSSession is invoking something like a nested prompt and your subsequent commands are not executing within it. Anyway, I believe Enter/Exit-PSSession is meant for interactive use – not scripting use. For scripts use New-PSSession and pass that session instance into Invoke-Command e.g.:

$cred = Get-Credential domain\DanTest 
$s = New-PSSession -computerName xsappb01 -credential $cred
Invoke-Command -Session $s -Scriptblock {New-Item -type file c:\temp\blah.txt}
Remove-PSSession $s