diff --git a/seaman.py b/seaman.py
index 93354c1..cbe33f8 100644
--- a/seaman.py
+++ b/seaman.py
@@ -147,24 +147,15 @@ class SeaManager(ServiceManager):
                     return
                 except KeyError:  # running on an other machine?
                     self.do_help()
-        run_command('SeaClient %s' % ' '.join(args))
+        if not ins:
+            ins = next(iter(self.env))
+        guicmd = f"{self.env[ins]['SEA_ROOT']}/SeaClient"
+        run_command('%s %s' % (guicmd, ' '.join(args)))
         print('starting sea gui %s' % ' '.join(args))
         time.sleep(5)
 
     def prepare_start(self, ins, service, *args):
         start_dir, env = super().prepare_start(ins, service)
-        # load newest version of SeaServer if needed
-        os.chdir(start_dir)
-        sea_server_src = os.environ.get(
-            'SEA_SERVER_SRC', '/afs/psi.ch/user/z/zolliker/public/git.rhel7/sics/SeaServer')
-        if sea_server_src and exists(sea_server_src):
-            if os.system('diff %s SeaServer' % sea_server_src):
-                print('reload SeaServer')
-                try:
-                    os.rename('SeaServer', 'SeaServer0')
-                except Exception:
-                    pass
-                os.system('cp %s ./' % sea_server_src)
         if service == 'sea':
             # debugging: copy status file in case of a reboot
             seastatus = self.get_status_filename(ins)