this problem should be solvable by changing some settings in the Management Studio.
If you login to the Management Studio, go to "System" (should be in the upper left menu).
You should find at the top the two tabs "Settings" and "Schema history".
When in "Settings", go to the middle where there should be the two tabs "E-Mail" and "DMS service", where you want to go to "DMS service".
Now, further down, go to the tab "Global" and even further down, go to the tab "Gateway access".
The first line is "Client path", the second line "Gateway host".
In your case, the "Client path" is probably empty, but should have "enaio/client" in it. The Gateway host is probably right for you, so no changes need to be made there.
Save the changes and that should be all you need to do.