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Red X Appears on the User Interface

If you see a red X or several red Xes on OnePager's forms and menus, it means that Microsoft Project is running out of memory (RAM) and OnePager is being starved for system resources:

This usually happens when you are running OnePager as a Microsoft Project add-in, instead of as a standalone desktop application. It may be helpful to know that when OnePager is being run as an add-in, it lives within the memory footprint of Microsoft Project, so if Microsoft Project starts running out of RAM, it can starve OnePager of the resources it needs to perform basic operations. When it gets bad enough, you can see artifacts such as these where the user interface is incomplete.

This has nothing to do with total available physical RAM on your computer. We've seen users with 32GB of total RAM, but Project still getting starved because it will only use up a certain amount of the total available.

Most of the time, this is a temporary issue. It can be resolved by closing OnePager and then completely closing Microsoft Project. A system restart is sometimes recommended, but not always required. Simply restarting Microsoft Project from the ground up and re-launching OnePager will typically solve the issue.

If you find that the issue persists, there are a few other things that you can check:

  1. Are multiple files open in Microsoft Project at once? Do they need to be? Each concurrently-open file will eat away at Microsoft Project's available resources, and if some of the files are large, you can eat up those resources pretty quickly.
  2. The same principle applies to OnePager--keep one chart open at a time instead of several.
  3. Check to see if you are on 32-bit Project or 64-bit Project. We find that 64-bit Project is much less susceptible to memory issues, so upgrading to 64-bit Project might be a solution, though it is not trivial, as the entire Office suite (Word, Excel, PowerPoint, etc.) would need to also be 64-bit, since Microsoft does not allow for different bitness between Office products. Remember, just because you are on 64-bit Windows does NOT necessarily mean that you are on 64-bit Project.
  4. Running OnePager as a standalone desktop application outside of Microsoft Project tends to mitigate many of these issues, as OnePager is able to largely exist in its own resource space without as much potential for getting starved by Project.


Last Updated: December 27, 2019