I've been getting frequent "Sigil encountered an error and may need to close"

[jennie2486]

I've been getting frequent "Sigil encountered an error and may need to close," with the following error details:

Error info: Critical: ARB::createContext: wglCreateContextAttribsARB() failed (GL error code: 0x0) for format: QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile), shared context: 0x30000 (The operation completed successfully.)
Sigil version: 1.7.0
Runtime Qt: 5.12.9
Compiled Qt: 5.12.9
System: Windows 10 (10.0)
Architecture: x86_64

Can anyone shed some light on why it is doing this and how to fix it.

Thank you!

[KevinH]

This is typically related to OpenGL driver issues. You might try updating your video driver.

Other things that have been reported to help when this error happens is to try switching your graphics card to 16 bit colour back to 24 or 32 bit colour. It seems to be generated when more than 13 tabs are open according to some bug reports. It has been officially reportedit as a Qt bugwho then closed it as out of scope since it appears to be a video driver issue and not something they control.

Most people seem to be able to dismiss the error dialog and continue with no adverse effects.