Ever since the upgrade to 11.3.2, we've had sporadic issues with multicasting and unicasting images. We are a strictly Dell shop and are imaging Latitude E5450s and Optiplex 745s.

During a unicast, we receive the following message:

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Name:	Unicast.JPG 
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Size:	132.4 KB 
ID:	5317

This message will appear well into the image restore, usually around 50% or so. In the novell-pbserv.log file on the imaging server, we see the following:
Code:
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(LicenseCheck) Checking Imaging License] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(ZENIMGWEB-CSCKT) Call to connect returned value greater than zero. Continuing with SSL port.] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(ZENIMGWEB-CSCKT) g_WebServiceHostName: 10.99.50.126.] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(RNT) Server GUID is: 5b2138a53dc54dd9b64107ab11de1339] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(RNT) Imaging License Info:  1] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(LC) open**** connection,server address, 0.0.0.0] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(LC) open connection,client address, 10.99.100.142] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [4230] [] [pbserv] [] [(LC) open connection, 10.99.100.142] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCV) received PROXY_CMD_VERSION] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [8054] [] [pbserv] [] [(HC) versions: 10, 10, 113201] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCV) done PROXY_CMD_VERSION] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCGOT) received PROXY_CMD_GET_OBJECT_TYPE] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:53.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCGOT) done PROXY_CMD_GET_OBJECT_TYPE] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:54.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCGI) received PROXY_CMD_GET_IMAGE] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:54.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCGI) Image File: /var/opt/novell/zenworks/content-repo/images/images/masters/5450z.zmg] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:54.000] [4230] [pbserv] [8054] [] [pbserv] [] [(SIF) sending /var/opt/novell/zenworks/content-repo/images/images/masters/5450z.zmg] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:17:54.000] [4230] [pbserv] [8054] [] [pbserv] [] [(SIF) start download] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:28:00.000] [4230] [pbserv] [8054] [] [pbserv] [] [(CW) send failure, 1304, 16384, -1, 104] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:28:00.000] [4230] [pbserv] [8054] [] [pbserv] [] [(PCGI) done, PROXY_CMD_GET_IMAGE] [] [] [] [Imaging]
[DEBUG] [06/09/2015 13:28:00.000] [4230] [pbserv] [8054] [] [pbserv] [] [(ECC) close connection, 10.99.100.142] [] [] [] [Imaging]
We are able to upload images to the server without any issues. We have tried multiple machines in addition to moving to different network switches.

During a multicast of the master that we created the image from, we will receive the "An error occurred during the installation" message on some clients, and on others, the multicast will simply freeze. The master displays the following:

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Name:	Multicast.JPG 
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Size:	143.9 KB 
ID:	5318

As stated, this problem is sporadic - some models will work at certain times while some will not. We've updated to the latest imaging drivers/updates and have recreated the image on the server multiple times. Any thoughts? Thanks!