Once you upgrade your NetVizura to version 5.x, it is possible that you may encounter the RPC failure error messages as presented in the following example:
In version 5.x we have switched to the new JavaScript framework.
To solve the issue, you should follow through the instructions provided in our upgrade manual, particularly the step: Refresh your browser (Ctrl + F5). Alternatively, you may clear the cache. Any of the suggested solutions will lead to an error-free window.