This message is generated when the algorithm used for computing eigenvectors fails to find an eigenvector corresponding to the indicated eigenvalue.
This message is currently used only for Eigenvectors and Eigensystem with symbolic matrices.
This message indicates an internal failure that should only occur under unusual conditions, such as failure to recognize a combination of symbols that simplifies to zero.
If you see this message in an example where it is not expected, please contact Technical Support.
Off[message] switches off the message; On[message] switches it on. For example: Off[General::eivec].