How can I solve this simulation error?

HI, I designed excavator system in simscape. when the model is simulated, the diagnostics message pop up as follow.

Initial conditions solve failed to converge.
...Nonlinear solver: Linear Algebra error. Failed to solve using iteration matrix.
......Equations (including nonlinear equations) of one or more components may be dependent or inconsistent. This can cause problems in transient initialization. Here is the set of components involved:

for your understanding well I attached a file into web address as follow. please, let me know the problem and solution.

https://docs.google.com/file/d/0B2ZD4DXeaLgtUFJoWll0QXlwRGM/edit?usp=sharing

[Ruben]

the google docs file is not publicly available...

Not converging can be caused by many different issues, you should be more specific.