It is recommended that you have the same
version of CitectSCADA across all nodes, servers and clients (web
client/IDC/display client). You can have issues when the Web Client
CAB file installed on the PC is a different version to the
CitectSCADA server. For example, if the CitectSCADA server is v6
SPKA you need to make sure the web client CAB file installed and
running is v6 SPKA and not v6. The CAB file version number is
typically matched to the files located in the \bin, e.g.
Citect32.exe.
If a web client CAB file is installed on a PC and the deployment
uses a newer CAB file this will be downloaded and installed
overwriting the old version. The web client CAB file will always
upgrade versions from the server, but never downgrade. This fail to
downgrade could lead to version mismatches between CitectSCADA
server and web client in particular when there are different
versioned servers being accessed by the same web client.
It is better to un-install a web client installation by going
through the Windows Control Panel >> Add Remove Programs
rather than deleting the C:\Windows\System32\Citect\WebClient\600
folder.
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