This error can occur when the COM components on the terminal cannot communicate with Aloha.
The terminal may behave normally and only display the error when trying to a redemption:
The AlohaPunchh logs will show the following error message:
2019-02-06 00:04:11,136 DEBUG AlohaPunchh: Done retrieving aloha order info and item categories. 3072 msec.
2019-02-06 00:04:11,137 DEBUG AlohaPunchh: Worker done. Program could NOT retrieve info from Aloha, closing app.
2019-02-06 23:18:29,281 INFO AlohaPunchh: Log to server event.
2019-02-06 23:18:29,281 INFO AlohaPunchh: file to serialize C:\bootdrv\AlohaQS\tmp\alohapunchh_20190206.log
2019-02-06 00:04:11,137 DEBUG AlohaPunchh: Worker done. Program could NOT retrieve info from Aloha, closing app.
2019-02-06 23:18:29,281 INFO AlohaPunchh: Log to server event.
2019-02-06 23:18:29,281 INFO AlohaPunchh: file to serialize C:\bootdrv\AlohaQS\tmp\alohapunchh_20190206.log
Try restarting the terminal.
If this issue is NOT resolved by restarting the terminal, then it's an indication that Aloha POS needs to be re-registered on all or the specific terminal displaying the issue.
In order to re-register Aloha, please run the following on the terminal:
Aloha Quick Service:
%iberdir%\bin\Iberqs.exe /regserver
%iberdir%\bin\regsvr32.exe iberqsps.dll
%iberdir%\bin\Iberqs.exe /regserver
%iberdir%\bin\regsvr32.exe iberqsps.dll
Aloha Table Service:
%iberdir%\bin\Iber.exe /regserver
%iberdir%\bin\regsvr32.exe iberps.dll