WebPICMD.exe /offline bug?

Hello,

I use the following command to fetch the installers:

C:\Program Files\Microsoft\Web Platform Installer>WebPICMD.exe /Offline /Products:OfficeToolsForVS2012RTW /Path:\\networkShare\Cache

and the following command to install it :

C:\Program Files\Microsoft\Web Platform Installer>WebPiCmd.exe /Install /Products:OfficeToolsForVS2012RTW /XML:\\networkShare\Cache\feeds\latest\webproductlist.xml

It used to work great until I recently executed the first command again : WebPICMD.exe /Offline /Products:OfficeToolsForVS2012RTW /Path:\\networkShare\Cache

which updated the webproductlist.xml

and now when I use the WebPiCmd.exe /Install /Products:OfficeToolsForVS2012RTW /XML:\\networkShare\Cache

I get the following error:

Unexpected exception occurred
An installer element must contain either a child iisComponent element, an instal
lCommands element or an msDeploy element. Line 178, position 8.

Note:

-it works when I put the old webproductlist.xml file.

-it is the same behaviour with every product