After installing "Interactive User Import version 2.0.10" on DNN version 5.2 I received SQL errors and notice the event scheduler was not created. To fix this issue I ran the following SQL script to resolve the issue.
-- ADD DNN SCHEDULER ITEM
execute AddSchedule
@TypeFullName = 'DataSprings.DNN.Modules.UserImport.UserImportProcess, DataSprings.DNN.Modules.UserImport'
,@TimeLapse = 1
,@TimeLapseMeasurement = 'm'
,@RetryTimeLapse = 30
,@RetryTimeLapseMeasurement = 'm'
,@RetainHistoryNum = 250
,@AttachToEvent = ''
,@CatchUpEnabled = 1
,@Enabled = 1
,@ObjectDependencies = ''
,@Servers = NULL
,@CreatedByUserID = NULL
,@FriendlyName = 'DataSprings_UserImport'
GO