diff --git a/nnlib/device.py b/nnlib/device.py
index 144de43..b61fb16 100644
--- a/nnlib/device.py
+++ b/nnlib/device.py
@@ -282,19 +282,20 @@ def get_plaidML_devices():
         plaidML_devices = []
         # Using plaidML OpenCL backend to determine system devices and has_nvidia_device
         try:
-            os.environ['PLAIDML_EXPERIMENTAL'] = 'false' #this enables work plaidML without run 'plaidml-setup'
+            os.environ['PLAIDML_EXPERIMENTAL'] = 'true' #this enables work plaidML without run 'plaidml-setup'
             import plaidml
             ctx = plaidml.Context()
-            for d in plaidml.devices(ctx, return_all=True)[0]:
-                details = json.loads(d.details)
-                if details['type'] == 'CPU': #skipping opencl-CPU
-                    continue
-                if 'nvidia' in details['vendor'].lower():
-                    has_nvidia_device = True
-                plaidML_devices += [ {'id':d.id,
-                                    'globalMemSize' : int(details['globalMemSize']),
-                                    'description' : d.description.decode()
-                                }]
+            for devices in plaidml.devices(ctx, return_all=True):
+                for d in devices:
+                    details = json.loads(d.details)
+                    if 'type' not in details or details['type'] == 'CPU': #skipping opencl-CPU
+                        continue
+                    if 'vendor' in details and 'nvidia' in details['vendor'].lower():
+                        has_nvidia_device = True
+                    plaidML_devices += [ {'id':d.id,
+                                        'globalMemSize' : int(details['globalMemSize']),
+                                        'description' : d.description.decode()
+                                    }]
             ctx.shutdown()
         except:
             pass