Manycam 261 Fix ((link)) -

The most common error in version 2.6.1 is the message. This happens when the virtual webcam driver becomes corrupted or is blocked by system updates.

ManyCam Error 261 can occur if another application is holding exclusive control over your physical webcam. manycam 261 fix

If your computer slows down, lower the resolution in ManyCam’s video settings to to reduce CPU load. The most common error in version 2