Worker this.calcdata is null or injected [object Object] function: sellTip this.calcdata is null
Please open Import script (icon above clothcalc), click Settings tab, on right hand side at the bottom click Reset Local storage data. it should work.
Bad Request 
You are logged into your tw-db account, but Cloth calc cannot load any data as you haven't imported any data from the game or imported data are corrupted. Please try to import again.
TypeError: TWDB.ClothCalc.init is not a function
Installed Cloth calc script is corrupted or not installed correctly. Please uninstall old script and install last version. We also recommend delete cache before you install new script.
Fatal error: failed to register tw-db.info script on TheWestApi
You have more than one script installed. Please check and uninstall all Cloth calc scripts. You can have only one instance installed at a time.
Calculated values are different to ones in the game
Please check if loaded data are up to date. Click on red icon and update your data. Check for calculation again.