So in this script for Csharpen I am getting an error after the first if for the [`bpy.ops.object.convert(target='MESH')`][1]. I am not sure why that is since it was working fine before adding conditionals. Is there a reason why that is happening?

    class sharpenOperator(bpy.types.Operator):
        '''Sharpen With Modifiers and Bevelling'''
        bl_idname = "csharpen.objects"
        bl_label = "CSharpen"
        bl_options = {'REGISTER', 'UNDO'} 
        
        ssharpangle = FloatProperty(name="SSharpening Angle", description="Set SSharp Angle", default= 30.0, min = 0.0, max = 180.0)
        
        angle = FloatProperty(name="AutoSmooth Angle", description="Set AutoSmooth angle", default= 60.0, min = 0.0, max = 180.0)
        
        bevelwidth = FloatProperty(name="Bevel Width Amount", description="Set Bevel Width", default= 0.0071, min = 0.002, max = .25)
        
        applyAll = BoolProperty(default = True)
        
        originalbevel = FloatProperty()
        
        # ADD A DRAW FUNCTION TO DISPLAY PROPERTIES ON THE F6 MENU
        def draw(self, context):
            layout = self.layout
    
            box = layout.box()
            # DRAW YOUR PROPERTIES IN A BOX
            box.prop( self, 'ssharpangle', text = "SsharpAngle" )
            box.prop( self, 'angle', text = "SmoothingAngle" )
            box.prop( self, 'bevelwidth', text = "BevelWidth")
            box.prop( self, 'applyall', text = "ApplyAll")
          
        def execute(self, context):
            #convert angle
            ob = bpy.context.selected_objects
            angle = self.angle
            originalbevel = self.originalbevel
            ssharpangle = self.ssharpangle
            angle = angle * (3.14159265359/180)
            ssharpangle = ssharpangle * (3.14159265359/180)
            bevelwidth = self.bevelwidth
            
            #Sets the Bevel Width To The Orig Bevel Width
            originalbevel = bpy.context.object.modifiers["Bevel"].width
                   
            if self.Applyall:
                #remove modifiers no one would want applied in this instance
                bpy.ops.object.modifier_remove(modifier="Bevel")
                bpy.ops.object.modifier_remove(modifier="Solidify")
                #convert to mesh for sanity
                bpy.ops.object.convert(target='MESH')
    
                #apply the scale to keep me sane
                bpy.ops.object.transform_apply(location=False, rotation=False, scale=True)
                
                #Start In Edit Mode
                bpy.ops.object.mode_set(mode='EDIT')
               
                #Unhide all The Geo!
                bpy.ops.mesh.reveal()
                
                #Clear SSharps Then Redo It
                #bpy.ops.mesh.select_mode(use_extend=False, use_expand=False, type='EDGE')
                #bpy.ops.mesh.select_all(action='DESELECT')
                #bpy.ops.mesh.select_all(action='TOGGLE')
                
                #AR suggested using -1s instead of Zeroes
                #bpy.ops.transform.edge_bevelweight(value=-1)
                #bpy.ops.mesh.mark_sharp(clear=True)
                #bpy.ops.transform.edge_crease(value=-1)
                
                #then do the csharp operator stuff.
                bpy.ops.mesh.select_mode(use_extend=False, use_expand=False, type='EDGE')
                bpy.ops.mesh.select_all(action='DESELECT')
                
                #Sharpening now using the ssharpangle parameter.
                bpy.ops.mesh.edges_select_sharp(sharpness=ssharpangle)
                                    
                bpy.ops.transform.edge_bevelweight(value=1)
                bpy.ops.transform.edge_crease(value=1)
                bpy.ops.mesh.mark_sharp()
                bpy.ops.object.editmode_toggle()     
                
            else:
                #Start In Edit Mode
                bpy.ops.object.mode_set(mode='EDIT')
               
                #Unhide all The Geo!
                bpy.ops.mesh.reveal()
                
                #Clear SSharps Then Redo It
                #bpy.ops.mesh.select_mode(use_extend=False, use_expand=False, type='EDGE')
                #bpy.ops.mesh.select_all(action='DESELECT')
                #bpy.ops.mesh.select_all(action='TOGGLE')
                
                #AR suggested using -1s instead of Zeroes
                #bpy.ops.transform.edge_bevelweight(value=-1)
                #bpy.ops.mesh.mark_sharp(clear=True)
                #bpy.ops.transform.edge_crease(value=-1)
                
                #then do the csharp operator stuff.
                bpy.ops.mesh.select_mode(use_extend=False, use_expand=False, type='EDGE')
                bpy.ops.mesh.select_all(action='DESELECT')
                
                #Sharpening now using the ssharpangle parameter.
                bpy.ops.mesh.edges_select_sharp(sharpness=ssharpangle)
                                    
                bpy.ops.transform.edge_bevelweight(value=1)
                bpy.ops.transform.edge_crease(value=1)
                bpy.ops.mesh.mark_sharp()
                bpy.ops.object.editmode_toggle()     
                
            #keep the old here for now
            bpy.ops.object.modifier_add(type='BEVEL')
            bpy.context.object.modifiers["Bevel"].use_clamp_overlap = False
            bpy.context.object.modifiers["Bevel"].show_in_editmode = False
            bpy.context.object.modifiers["Bevel"].width = 0.0071
            bpy.context.object.modifiers["Bevel"].segments = 3
            bpy.context.object.modifiers["Bevel"].profile = 0.70
            bpy.context.object.modifiers["Bevel"].limit_method = 'WEIGHT'
    
            #Sets Bevel To Bevel Width needs IF
            bpy.context.object.modifiers["Bevel"].width = bevelwidth
            
            bpy.context.object.data.use_auto_smooth = True
            
            #now sets angle to Var angle.
            bpy.context.object.data.auto_smooth_angle = angle
            
            
            bpy.ops.object.shade_smooth()
            
            return {'FINISHED'}    

  [1]: http://www.blender.org/api/blender_python_api_2_76_release/bpy.ops.object.html?highlight=convert#bpy.ops.object.convert