Change from unit="1" to unit="" to avoid unit issues.

Modelica/Electrical/Batteries/BaseClasses/BaseCellStack.mo

@@ -16,7 +16,7 @@ partial model BaseCellStack
   Modelica.Electrical.Analog.Sensors.CurrentSensor currentSensor
     annotation (Placement(transformation(extent={{-90,10},{-70,-10}})));
   Blocks.Continuous.LimIntegrator limIntegrator(
-    final k=1/(Np*cellData.Qnom),
+    final k(unit="")=1/(Np*cellData.Qnom),
     outMax=1 - SOCtolerance,
     outMin=SOCtolerance,
       final initType=Modelica.Blocks.Types.Init.NoInit) annotation (
@@ -29,7 +29,7 @@ partial model BaseCellStack
     final smoothness=cellData.smoothness,
     extrapolation=Modelica.Blocks.Types.Extrapolation.HoldLastPoint)
     annotation (Placement(transformation(extent={{-70,40},{-50,60}})));
-  Modelica.Blocks.Math.Gain gainV(final k=Ns*cellData.OCVmax) annotation (
+  Modelica.Blocks.Math.Gain gainV(final k(unit="")=Ns*cellData.OCVmax) annotation (
       Placement(transformation(
         extent={{-10,-10},{10,10}},
         rotation=270,

Modelica/Electrical/Batteries/BaseClasses/BaseCellWithSensors.mo

@@ -24,7 +24,7 @@ partial model BaseCellWithSensors "Partial cell with sensors"
   Modelica.Electrical.Analog.Sensors.MultiSensor multiSensor
     annotation (Placement(transformation(extent={{-70,-10},{-50,10}})));
   Modelica.Blocks.Continuous.LimIntegrator limIntegrator(
-    k=1/cellData.Qnom,
+    k(unit="")=1/cellData.Qnom,
     outMax=1 - SOCtolerance,
     outMin=SOCtolerance,
     initType=Modelica.Blocks.Types.Init.InitialOutput,

Modelica/Electrical/Machines/Examples/ControlledDCDrives/Utilities/IdealDcDc.mo

@@ -28,7 +28,7 @@ model IdealDcDc "Ideal DC-DC inverter"
   Modelica.Blocks.Continuous.Integrator powerController(
     initType=Modelica.Blocks.Types.Init.InitialOutput,
     y_start=0,
-    k=1/Ti) annotation (Placement(transformation(extent={{30,10},{10,30}})));
+    k(unit="")=1/Ti) annotation (Placement(transformation(extent={{30,10},{10,30}})));
   Modelica.Electrical.Analog.Basic.Ground groundMotor annotation (Placement(
         transformation(
         extent={{-10,10},{10,-10}},

Modelica/Electrical/Machines/Examples/ControlledDCDrives/Utilities/LimitedPI.mo

@@ -70,8 +70,8 @@ block LimitedPI
 
   Modelica.Blocks.Math.Add addAntiWindup(k1=1, k2=-1/k)
     annotation (Placement(transformation(extent={{-50,-30},{-30,-10}})));
-  Modelica.Blocks.Continuous.Integrator integrator(k=1/Ti, initType=Modelica.Blocks.Types.Init.NoInit) if useI
-    annotation (Placement(transformation(extent={{-20,-30},{0,-10}})));
+  Modelica.Blocks.Continuous.Integrator integrator(k(unit="")=1/Ti, initType=Modelica.Blocks.Types.Init.NoInit) 
+    if useI annotation (Placement(transformation(extent={{-20,-30},{0,-10}})));
   Modelica.Blocks.Math.Add3 add3(
     k1=k,
     k2=k,

Modelica/Electrical/Machines/Examples/ControlledDCDrives/Utilities/PartialControlledDCPM.mo

@@ -46,13 +46,13 @@ partial model PartialControlledDCPM
         origin={30,80})));
   LimitedPI currentController(
     constantLimits=false,
-    k=driveData.kpI,
+    k(unit="")=driveData.kpI,
     Ti=driveData.TiI,
-    KFF=driveData.kPhi,
+    KFF(unit="")=driveData.kPhi,
     initType=Modelica.Blocks.Types.Init.InitialOutput,
     useFF=true)
     annotation (Placement(transformation(extent={{-50,-20},{-30,0}})));
-  Modelica.Blocks.Math.Gain tau2i(k=1/driveData.kPhi) annotation (Placement(
+  Modelica.Blocks.Math.Gain tau2i(k(unit="")=1/driveData.kPhi) annotation (Placement(
         transformation(
         extent={{10,-10},{-10,10}},
         rotation=180,

Modelica/Electrical/Machines/Examples/DCMachines/DCPM_CurrentControlled.mo

@@ -77,7 +77,7 @@ model DCPM_CurrentControlled
     annotation (Placement(transformation(extent={{-20,50},{0,70}})));
   Blocks.Continuous.LimPID PID(withFeedForward=true, initType=Modelica.Blocks.Types.Init.InitialOutput,
     controllerType=Modelica.Blocks.Types.SimpleController.PI,
-    k=k,
+    k(unit="")=k,
     Ti=Ti,
     yMax=dcpmData.VaNominal,
     kFF=kPhi)

Modelica/Electrical/PowerConverters/ACAC/Control/VoltageToAngle.mo

@@ -14,7 +14,7 @@ block VoltageToAngle "Reference voltage to firing angle converter"
     max=pi,
     start=pi) "Firing angle"
     annotation (Placement(transformation(extent={{100,-10},{120,10}})));
-  Modelica.Blocks.Math.Gain gain_v(final k=1/VNominal)
+  Modelica.Blocks.Math.Gain gain_v(final k(unit="")=1/VNominal)
     annotation (Placement(transformation(extent={{-80,-10},{-60,10}})));
   Modelica.Blocks.Nonlinear.Limiter limiter(final uMax=1, final uMin=0)
     annotation (Placement(transformation(extent={{-40,-10},{-20,10}})));

Modelica/Magnetic/QuasiStatic/FundamentalWave/Examples/BasicMachines/SynchronousMachines/SMPM_FieldWeakening.mo

@@ -85,9 +85,9 @@ model SMPM_FieldWeakening
   ExampleUtilities.FieldWeakeningController fieldWeakeningController(VNominal=
         VNominal, IMax=INominal)
     annotation (Placement(transformation(extent={{-40,30},{-20,50}})));
-  Blocks.Math.Gain gainCurrent(k=INominal)
+  Blocks.Math.Gain gainCurrent(k(unit="")=INominal)
     annotation (Placement(transformation(extent={{-70,30},{-50,50}})));
-  Blocks.Math.Gain gainSpeed(k=wNominal)
+  Blocks.Math.Gain gainSpeed(k(unit="")=wNominal)
     annotation (Placement(transformation(extent={{-70,-90},{-50,-70}})));
   Blocks.Sources.Ramp     iqRef(
     height=1,

Modelica/Mechanics/Translational/Components/Vehicle.mo

@@ -80,7 +80,8 @@ public
         extent={{-10,-10},{10,10}},
         rotation=90,
         origin={60,-60})));
-  Blocks.Math.Gain gravForceGain(final k=-m*g) annotation (Placement(transformation(
+  Blocks.Math.Gain gravForceGain(final k(unit="")=-m*g) 
+    annotation (Placement(transformation(
         extent={{-10,-10},{10,10}},
         origin={20,30})));
 protected

Modelica/Mechanics/Translational/Examples/Vehicle.mo

@@ -66,7 +66,7 @@ model Vehicle "One-dimensional vehicle with driving resistances"
     annotation (Placement(transformation(extent={{0,-10},{20,10}})));
   Rotational.Sources.Torque torque1
     annotation (Placement(transformation(extent={{0,40},{20,60}})));
-  Modelica.Blocks.Math.Gain gain(k=(fDrag + fRoll + fGrav)*R)
+  Modelica.Blocks.Math.Gain gain(k(unit="")=(fDrag + fRoll + fGrav)*R)
     annotation (Placement(transformation(extent={{-40,-10},{-20,10}})));
   Blocks.Math.Gain gain1(k=2)
     annotation (Placement(transformation(extent={{-10,-10},{10,10}},

Modelica/Thermal/FluidHeatFlow/Examples/WaterPump.mo

@@ -18,7 +18,7 @@ model WaterPump "Water pumping station"
     amplitude=1.2) annotation (Placement(transformation(
         extent={{-10,-10},{10,10}},
         origin={-70,-50})));
-  Modelica.Blocks.Math.Gain gain(k=idealPump.wNominal)
+  Modelica.Blocks.Math.Gain gain(k(unit="")=idealPump.wNominal)
     annotation (Placement(transformation(extent={{-50,-60},{-30,-40}})));
   Modelica.Mechanics.Rotational.Sources.Speed speed(exact=true)
     annotation (Placement(transformation(extent={{-20,-60},{0,-40}})));