I am encountering 3 errors with version 1.0 of the FSS E195 that I purchased from Contrail: 1 - An ECS error appears after engine start; even when following the checklist correctly, a yellow warning appears on the EICAS. Curiously, the error occurs when I switch the APU to OFF after starting the engines. The error only clears after I take off and switch the APU to OFF. 2 - I cannot engage the autothrottle during takeoff. I follow the procedure of advancing thrust to 40%, waiting for stabilization, and then pushing the throttles to TOGA, but it fails to engage; I can only engage it after takeoff once the autopilot is connected. 3 - The aircraft oscillates during the climb—pitching up with a climb rate exceeding 3000 FPM until it nears a stall, then dropping the nose with a descent rate exceeding 3000 FPM. I enter the flight plan correctly, including all waypoints and altitude restrictions, as well as the cruise altitude, yet the aircraft oscillates constantly. The climb modes (such as FLCH) appear correctly on the PFD, and VNAV is active, but it still does not function properly. Interestingly, the first error only appeared after the update to version 1.0, and the other two issues were not present previously; they also only appeared after the version 1.0 update. I used the FSS application to delete the WASM data from the old version, uninstalled the aircraft, restarted my system, and installed the new version, but all these problems persist.