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Why am I getting error -28, "Directory String Error", when trying to start Concept?
Cannot start the Concept software.
Error -28 will appear when starting up Concept when the shortcut is pointing to the wrong target location.
If error -28 appears Concept will not open. To resolve this issue navigate to the Concept .exe file on the C:/ drive. Concept should start by Double-Clicking the file. The original shortcut will not work, so you should create a new shortcut but Right-Clicking on the Concept .exe file and selecting Copy and then Paste to a more convenient location.