We were seeing the same or similar error in our environment and it turned out to be a bad driver reference in the DeployAnywhere database.
Every time we tried to run a OS install task we would see the following error in the failed task status:
ErrorMessage: Exception has occured in File SMPPackage.cpp at Line No 679. Type of exception is GeneralError. Error is HTTP error 404 Not Found. Error Description is utilCSMPPackageGetMultiplesFileFromHTTP. Value of Windows error code = 183 and message is Cannot create a file when that file already exists.
We looked at the DSTasks.log (x:\program files\altiris\deployment\logs\) on the computer where the task was failing and found this in the log:
[2013/11/26 15:41:12.302 1228:236 2] tcube::ClientSOI::ExecuteCommand:1008 Result of excution of X:\Program Files\Symantec\Deployment\Ghost\DriverManager64.exe with command line : /ddb="C:\DS_SOI\Symantec\Deployment\DriversDB" /list="X:\program files\Symantec\Deployment\driver_list.txt" /cout="C:\DS_SOI\Symantec\Deployment\DA_Eval_List.xml" /format=xml
[2013/11/26 15:41:12.302 1228:236 2] apps\DeploymentClient\clientsoi\tcube_clientsoi.cpp:1030 ExecuteCommand returned
[2013/11/26 15:41:13.325 1228:236 0] common\util\SMPPackage.cpp@678: Error in downloading file from HTTP.source :http://<notification-server-fqdn>/Altiris/PackageShare/pkggroup_uabhdgv2h3563ykdzc5redxvrn4eoul7/DriversDB/Intel_Corporation.igfx.9.17.10.3040/GfxUI.exe.config and dest :C:\DS_SOI\Symantec\Deployment\DriversDB\Intel_Corporation.igfx.9.17.10.3040\GfxUI.exe.config. The COM error = HTTP error: 404 Not Found
[2013/11/26 15:41:13.325 1228:236 0] File:common\util\ExecuteCommand.cpp,Line:4303 ERROR: Exception has occured in File SMPPackage.cpp at Line No 679. Type of exception is GeneralError. Error is HTTP error: 404 Not Found. Error Description is "util::CSMPPackage::GetMultiplesFileFromHTTP". Value of Windows error code = 183 and message is " Cannot create a file when that file already exists.
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When we browsed to the URL (http://<notification-server-fqdn>/Altiris/PackageShare/pkggroup_uabhdgv2h3563ykdzc5redxvrn4eoul7/DriversDB/Intel_Corporation.igfx.9.17.10.3040) we found that the directory existed, but the "GfxUI.exe" file did not actually exist.
We removed that driver (Intel_Corporation.igfx.9.17.10.3040) from our DeployAnywhere database and now the OS Install task is working correctly.
Not sure if this is entirely related or a fix or others here who have the same error message, but this seemed to work for us.