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On-Screen Takeoff (Released: 08-19-2020)

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Upgrade Please

This version of On-Screen Takeoff 3.98 has been replaced by, please upgrade at your earliest convenience as there are numerous features and bug fixes you're missing.

Download links and other resources are provided on the Product Info page (just click the product name above or this link:  On-Screen Takeoff® Product Information and Downloads - OST DPC).

On-Screen Takeoff

OST v. is a feature release to On-Screen Takeoff available to all licensed users under a current maintenance subscription. This release includes a great new set of features and numerous bug fixes and changes.

Microsoft has ended "Mainstream Support" for Windows 8.1, therefore On Center no longer tests new versions on that platform. Please see related articles for updated System Requirements and our Sunsetting/End-of-Life policy.



  • Moved the MyOnCenter Tab to the first position and default to opening it for licensed users. (see OST 3.98 - MyOnCenter Tab)
    • This Tab provides access to the Customer Portal, Training and Support options, and an array of resources intended to help the new and experienced user get the most out of their software.
    • On Windows 8.1 (32-bit), the MyOnCenter Tab throws an error, this is a known issue and deemed acceptable as this version of Windows is no longer supported. 
  • Bid exports (OSP and OST files) now include the "Mark Takeoff Complete" indicator as appropriate (works if you send to another OST 3.98 user only).


    Reported by Customers:
    • [ON-848] - Support Case 388558 - Sheet names are changed sometimes when exporting and importing bid packages
    • [ON-875] - Support Case 391599 - the program does not convert all PDF images in Cover Sheet to TIFF
    • [ON-877] - Support Case 389112 - duplicating a Condition, while the Condition Window is sorted by Condition Name and the Condition Number column is turned off, creates the duplicate Condition in the wrong order
    • [ON-999] - Support Case 386386 - Linear takeoff objects set to connect to other linears are affecting takeoff objects on hidden layers
    • [ON-1580] - Support Case 394941 - when exporting the the Takeoff Tab to CSV, if the Tab is Grouped by Zone, Bid Areas are not shown correctly in the CSV file
    • [ON-1581] - Support Case 394836 - some large font sizes (for Display Dimension) causes a "Takeoff outside of boundaries" error
    • [ON-2106] - Support Case 402657 - In OST 3.97, when tabbing through fields in the Condition Properties (Count) dialog box, the Shape field is skipped
    Identified During Routine Testing:
    • [ON-1858] - The "Mark Takeoff Complete" option affects child bids when set on the Base Bid
    • [ON-1991] - Minimizing the "2nd View Window" modal window closes it on Windows 10 Pro (fix is to disable the minimize button)
    • [ON-2278] - Clicking "Reset All Settings", while on the Image tab, then navigating to the Bids Tab and back to the Image Tab causes general exception error (crash)
    • [ON-2281] - Clicking "Reset All Settings" and closing program deselects all databases in the Open Database dialog box

    Known Issues

    • Bug 3070 - Typical Groups cause performance degradation as more markers are placed in a project.
    • Rotating a linear takeoff object that is set to "3-point curve" causes it to recalculate with slightly different results. This will be fixed in an upcoming version of OST 3.98.
    • Area Backouts within a Zone are shown as "unassigned" negative values on the Takeoff Tab (Case # 02171995) ON-4441
    • ON-4746 - navigating to the Takeoff or Worksheet Tab closes the View Window

    Digital Production Control

    No changes to DPC

    Product documentation (user guides) describes functionality in the latest version of each major release and may not match the functionality in the version you are using. Please check the Product Information and Downloads pages by clicking one of the product buttons above.

    Something Wrong with this Article? Let us Know! Copyright 2013 - On Center Software, Inc. by ConstructConnect - All Rights Reserved.