From: Melbourne, Australia
Good news, it's a really easy fix.
Go into your Command main directory. On my system it's C:\Program Files (x86)\Steam\steamapps\common\Command Modern Air Naval Operations\
Enter the Scenarios directory, then the Tutorials directory.
Find the folder named Strike Tutorials and delete it. Note there will be a folder called Strike Tutorial (without the s), leave this in place. If unsure, simply move the folder to your desktop temporarily and see if that fixes the problem.
Re-start CMANO and your campaigns should be working again.
1) Yes, thanks, its worked!
2) In the Desert Storm campaign, the picture disappeared in a briefing of the 1st mission.
3) Will there be a microfix for the Steam version? Not everyone knows how to fix it manually. In addition, Steam can roll back every manual changes when checking files.
4) 4) DPI scaling method not work in the game options? The font is the same size for any DPI scaling. Would it make it difficult for you to verify this? Thank you.
Can you make a post in the tech support forum for any unresolved issues?