"The think-cell license key of this product has expired," the screen mocked.
If you can launch PowerPoint with Think-Cell loaded from the portable drive: how to check think cell license key portable
Searching for a file if you received the software as a ZIP archive. KB0010: The think-cell license key window pops up "The think-cell license key of this product has
HKEY_CURRENT_USER\Software\Classes\thinkcell.addin how to check think cell license key portable