Help! I Can’t Open DII Files!

There are many reasons why your DII file might not open on your computer. If you have DII files that don’t open when you double-click it, ask yourself the following questions...

Do I have the right program?

If you don’t have a program installed on your computer that’s compatible with DII files, you won’t be able to open one. See if you have one of the most common programs associated with DII files listed below.

  • TrialDirector Load File
  • CT Summation Document Image Information Load File

What type of file is it?

When you can’t open DII files, try to figure out the file type. This can help you find the right program to open it. Usually, DII files are considered Data Files. However, you can look up the file type to be sure. Start by right-clicking the file icon and clicking “Properties” (“More Info” if you’re on a Mac). Then look for the file type under “Type of File” (“Kind” on a Mac).

Can a developer help?

When you can’t open DII files, a software developer might be able to help. The developers for the programs mentioned above are as follows:

Software Developer
TrialDirector Load File inData Corporation
CT Summation Document Image Information Load File CT Summation Inc.

Try contacting one of these developers to find out how you can open your DII file.

Can I use a universal file viewer?

A universal file viewer is the way to go when you have DII files that can’t be opened by any other program. Install a universal file viewer like File Magic (Download) and see if it will open your DII file. Remember that if your file is not compatible, the universal file viewer will only open it in binary format.

Download Universal File Viewer (File Magic) 

File Magic