In the case you are displaying the emails list, you will see this error: System.OutOfMemoryException. The system has low memory to show the list.
All versions of eWay-CRM
The issue is caused by emails that are saved in eWay-CRM. Their content is saved to the Note field. The big amount of emails can exceed the capacity of your RAM.
The issue can be solved by downloading this file: http://download.eway-crm.cz/fix/EmailsWithoutNoteLayouts.zip
Extract the file and launch the Registry file. The procedure set that emails won't contain the Note column which is the reason for exceeding the memory capacity.