Hi Antonio… if you post your pattern (and any measurement) file, maybe one of us can take a look at it.
Also I suggest trying to restart the Seamly2D, and then loading the pattern. By the error I can tell it’s an older pattern that needs to be converted to the newer version of your Seamly2D. Sometimes things can get mixed up with the temp pattern file when converting - especially if you’ve already opened other patterns without restarting the app.
Hello i have just received the same error Im trying out seamly for the first time and started a pants block - at some point seamly crashed and then when i tried to reopen the file, that error message came up would be grateful for any help