Posted 29 April 2026, 2:41 am EST
Hello,
Just for your information, starting with the 2025v2(740) release, we have introduced multi-target packages that work across both .NET Framework 4.8 and modern .NET projects. Because of this, we have updated the DLL names and namespaces of our controls. For example, in the .NET Framework, the DLL name and namespace for C1FlexGrid was C1.Win.C1FlexGrid, but in the latest releases, it has been simplified to C1.Win.FlexGrid. To upgrade, you will need to update your project references, your licx file, and any corresponding namespace imports in your code.
We have also changed the licensing model to the new model (SA3Client). For more information, refer https://developer.mescius.com/forums/c1-studio/c1-2025-v2-1-maintenance-release-with-licensing-changes. So, To use the latest versions(v755 or later), you need to activate your serial key using sa3client.
Assuming that you have activated the license key using sa3client and upgraded references, we looked into the error message you mentioned. It looks like the errors are being caused by a mismatch between the DLLs you have referenced in your project and the entries in your licenses.licx file.
Please ensure the DLLs referenced in your project match the entries in your licenses.licx file. You should replace the old DLLs with the latest version (4.8.20252.761) and update the licx file to reflect these changes.
If the issue still persists after checking that, please share your licx file with us along with the DLLs referenced in your project so we can take a closer look.
Regards,
Uttkarsh.
