Quick test here and same procedure as describe by pcxz. Finish always with a crash of kstars.
Here are the logs :
2017-11-26T16:43:34: [INFO] Device configuration saved.
2017-11-26T16:43:34: [INFO] Saving device configuration...
2017-11-26T16:43:34: [INFO] Device configuration applied.
2017-11-26T16:43:34: [INFO] Loading device configuration...
2017-11-26T16:43:33: [INFO] Mount UTC offset is 1.00. UTC time is 2017-11-25T01:10:22
2017-11-26T16:43:33: [INFO] Mount is unparked.
2017-11-26T16:43:33: [WARNING] Failed to retrive firmware information.
2017-11-26T16:43:33: [ERROR] Timeout error
2017-11-26T16:43:28: [INFO] Controller version: 4.21
2017-11-26T16:43:28: [INFO] Celestron NexStar is online.