BigIP Report Old

After upgrading to Powershell 4:

PS C:\Users\Administrator\Documents\BigIpReport> .\bigipreport-4.7.3.ps1 Successfully loaded the config file 2017-12-27 08:55:06 Configuring the console window 2017-12-27 08:55:06 Pre-execution checks 2017-12-27 08:55:06 iControl Snapin could not be found, aborting 2017-12-27 08:55:06 There were errors during the config file sanity check 2017-12-27 08:55:06 Attempting to sen an error report via mail 2017-12-27 08:55:06 There were errors while generating the report 2017-12-27 08:55:06 Sending report 2017-12-27 08:55:06 Exiting

the email says:

The following handled errors was thrown during the execution iControl Snapin could not be found, aborting The following exceptions was thrown during script execution CategoryLinenumberLineStacktrace PSSecurityException1At line:1 char:1 + .\bigipreport-4.7.3.ps1 + ~~~~~~~~~~~~~~~~~~~~~~~at , : line 1 CommandNotFoundException1At line:1 char:2 + ;s + ~at , : line 1 ItemNotFoundException1At line:1 char:1 + cd Big + ~~~~~~at , : line 1