Installation error: system.argumentnullexception value cannot be null.

iSlideCreated at:Apr 16, 2020 15:01:33Updated at:Jun 30, 2022 16:44:58

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[Solution 1]

  1. Uninstall iSlide Tools: find iSlide Tools by clicking Control Panel > Programs, and right click on it, choose uninstall;
  2. Re-install iSlide. In the installation process, when in the [Select installation folder] step, click "Browse" to install it in a new folder on another disk;
  3. Once the installation is done, restart your PowerPoint program to check whether everything is ok.

 

[Solution 2]

  1. Close the PowerPoint files and disable your anti-virus softwares temporarily;
  2. Search [iSlide] on My Computer;
  3. Press Ctrl+A to select all the iSlide-related files shown in the result, and right click to delete all of them. If some files cannot be deleted, just skip;
  4. Download iSlide from official website and re-install it.