Visual C++ Runtime Error when opening project in 1.4.0

Hey all, hopefully this an easy fix. I’m trying out the recent update to 1.4.0 and getting an error when opening a project previously saved on 1.3.4

I’ve looked around for log files but didn’t find any obvious ones. If there’s a flag I can enable to collect more data I can do that.

Microsoft Visual C++ Runtime Library
Runtime Error!

What do you want to achieve?

Open a project last saved on 1.3.4

What have you tried so far?

Reinstalling studio, clearing files under Documents\SquareLine

Screenshot or video


  • SquareLine Studio version: 1.4.0
  • Operating system: Win 11 22H2
  • Target hardware: Arduino TFT_eSPI, LVGL 8.3.6

You can find the log file at this path: C:\Users\AppData\LocalLow\SquareLine Kft_\SquareLine_Studio\Player.log
If you send it by email to we’ll try to help you find out the cause.