Hello ANSYS community

I am quite new ANSYS user and struggling with my truss model. I have several problems with my model - tons of different errors and uncertainty. Model is added to attachment. 

First of all I like to make model, which has brace elements connections, in of plane and out of plane springs and I can choose the stiffness of the springs (connection in the picture). Brace is connected to the chord with rigid beam (MPC184). I tried to use joint connections and beam elements, but I am not sure if its the right way to do it. 

Secondly, I didn't but joints in my model and tried to get model work without joints. However, I got tons of errors and haven't find working solutions. 

1. "Joints are being used in the current analysis with Large Deflection turned Off.  Thus, only linearized joint behavior will be considered.  If finite rotation and large deflection effects are to be considered, please turn on Large Deflection."

2. If I turn Large deflections on I get following errors and warnings

"An internal solution magnitude limit was exceeded. Please check your Environment for inappropriate load values or insufficient supports.  Please see the Troubleshooting section of the Help System for more information."

"The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose."

"An internal solution magnitude limit was exceeded. (Node Number 59, Body SYS\Beam (200x6,3), DOF UY) Please check your Environment for inappropriate load values or insufficient supports.  You may select the offending object and/or geometry via RMB on this warning in the Messages window.  Please see the Troubleshooting section of the Help System for more information.". 

3. In my opinion, if I use correct supports - one end is fixed and other has freedom to move in one direction then I got additional error to above mentioned errors. "Large deformation effects are active which may have invalidated some of your applied supports such as displacement, cylindrical, frictionless, or compression only.  Refer to Troubleshooting in the Help System for more details."

Otherwise, if I have both ends fixed, the error won't appear.

Could anybody explain or refer to something, how to fix these problems(errrors)?

Thank you in advance,

Sander