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CPC FAQ

Can I still use CPC files in OST 3.4? Yes – however, they must be converted to TIF format – OST no longer is able to display CPC files in native format.
How does the converter work?

When you add a CPC file to a new project or access an existing project with CPC files, the user will get a prompt advising them that they OST no longer supports native CPC files and that they must convert. They should select “Yes to ALL”.

The application will launch ‘CPCTool.exe’ which is a utility provided by Cartesian (the ‘owners’ of the CPC file type). The FIRST TIME they run CPCTool.exe they will be prompted to read/accept a User Agreement from Cartesian – they MUST accept this or the converter will not work.

How can I get the CPCTool to work with Windows Vista? Due to the way Windows Vista maintains security, even if a user is an Admin, they aren’t really running AS AN ADMIN most of the time – only if an application invokes the Admin level of security (like our installer does) does Windows pass an “Admin Token” to the user for a specific use (like installing an app, writing to the system registry, deleting certain files…). The CPCTool does NOT invoke the Admin token correctly – the only way around this is for an Admin to RIGHT CLICK on the CPCTool.exe file (located at C:\Program Files\On-Screen Takeoff 3\) and select “Run as Administrator”. Then, they can read/accept the license agreement. Once this is completed,
the CPCTool will work normally.
What happens to my existing takeoff when I convert the CPC to TIF? Your takeoff should not be affected. If anything, you may need to make very minor adjustments to the scale. (Use the “Calculate Scale” feature – all of your takeoff will re-size itself once the scale is changed).
When using the Planroom tab in On-Screen Takeoff,
why won’t my images convert correctly?
The CPCTool user agreement was not accepted by an Administrator (see above) or the user has the Planroom Folder pointing to a location where they cannot create the directory structure. Even if they have ACCESS to a particular location, they have to be mindful of 2 things: 1.) They may not have access to WRITE/Create folders/files in that location and 2.) Depending on how complex the folder structure, OST may not be able to accommodate the number of characters in the folder path (limited to 256 characters TOTAL including the file name).