Whenever I go to the “Sales” tab while configuring a plugin for upload, the page blanks out and the only two buttons that work are “Cancel” and “Submit.” I’m not sure but it could have something to do with not having permissions to sell plugins (assuming that’s what the “Sales” tab is for). I tracked down the script and it seems that it’s trying to generate a premium benefits link with a nonexistent asset ID. I’d dig further but I’m not familiar with RoactRodux yet. 
Legendary Roact stack trace in 3... 2...
13:34:25.943 - Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.NoYield:26: Plugin_Toolbox.rbxm.Toolbox.Core.Components.AssetConfiguration.SalesPage:100: bad argument #2 (number expected, got nil)
13:34:25.943 - Plugin_Toolbox.rbxm.Toolbox.Core.Components.AssetConfiguration.SalesPage:100
13:34:25.944 - Plugin_Toolbox.rbxm.Toolbox.Core.Consumers.LocalizationConsumer:22 function render
13:34:25.944 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:289 function __mount
13:34:25.944 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:317 function mountVirtualNode
13:34:25.945 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:88 function updateChildren
13:34:25.945 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.945 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:292 function __mount
13:34:25.945 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:317 function mountVirtualNode
13:34:25.946 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:88 function updateChildren
13:34:25.946 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.946 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:292 function __mount
13:34:25.947 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:317 function mountVirtualNode
13:34:25.947 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:88 function updateChildren
13:34:25.947 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.948 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:292 function __mount
13:34:25.948 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:317 function mountVirtualNode
13:34:25.948 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:88 function updateChildren
13:34:25.948 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:100 function updateVirtualNodeWithChildren
13:34:25.949 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.RobloxRenderer:273 function updateHostNode
13:34:25.949 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:215 function updateVirtualNode
13:34:25.949 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.950 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:100 function updateVirtualNodeWithChildren
13:34:25.950 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.RobloxRenderer:273 function updateHostNode
13:34:25.950 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:215 function updateVirtualNode
13:34:25.950 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.951 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.951 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.951 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.952 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:219 function updateVirtualNode
13:34:25.952 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.952 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.952 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.953 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.953 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:219 function updateVirtualNode
13:34:25.953 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.954 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.954 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.954 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.955 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:219 function updateVirtualNode
13:34:25.955 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.955 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.956 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.956 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.956 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:219 function updateVirtualNode
13:34:25.956 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.957 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.957 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.957 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.958 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:219 function updateVirtualNode
13:34:25.958 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:67 function updateChildren
13:34:25.959 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.createReconciler:110 function updateVirtualNodeWithRenderResult
13:34:25.959 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:455 function __resolveUpdate
13:34:25.959 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:393 function __update
13:34:25.959 - Plugin_Toolbox.rbxm.Toolbox.Libs.Roact.Component:161 function setState
13:34:25.960 - Plugin_Toolbox.rbxm.Toolbox.Libs.RoactRodux.connect:162
13:34:25.960 - Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.Signal:70 function fire
13:34:25.961 - Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.Store:125
13:34:25.961 -
13:34:25.961 - Stack Begin
13:34:25.962 - Script 'Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.NoYield', Line 13 - function resultHandler
13:34:25.962 - Script 'Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.NoYield', Line 26 - function NoYield
13:34:25.962 - Script 'Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.Store', Line 124 - function flush
13:34:25.963 - Script 'Plugin_Toolbox.rbxm.Toolbox.Libs.Rodux.Store', Line 46
13:34:25.963 - Stack End
