The connection string Async = CAsync.Connect(Nothing, Nothing, Nothing, 15) works fine on my systemBut the same connection string throws TOOLKITCANTMODIFY error on other systems when running the built exe file. Why is this happening?
Try running vb_api_register.bat with admin rights in a machine where you want to execute this program. this enables VB API in that system. This file exist in parametric\bin directory.
Some previous case reports that this error message happened due to some typo in some env var.
Given that the issue happens in a different workstation than yours, it seems like a probable cause.