C++ error

[nina]

Hi,

I started to work on a project, but at some point it blocks because of this error "Unhandled unknown c++ exception in view provider: event callback ". Does somebody have any ideea about could I do about it?

[wmayer]

Without further information it's impossible to say what exactly is causing the failure. But as a general note the error message is written in ViewProvider::eventCallback and the reason is that in the event handler of a sub-class an exception is raised but not appropriately handled there. It then is forwarded to the calling instance and this generic error message is written.