Error: Cannot alter or drop column 'x' because it is enabled for Full-Text Search

Found the solution myself:

-- You should call the DISABLE command 
ALTER FULLTEXT INDEX ON TableName DISABLE
ALTER FULLTEXT INDEX ON TableName DROP (ColumnName)
ALTER TABLE TableName DROP COLUMN ColumnName

I know this is an old post,I got stuck up,where i had to alter a column in table rather than drop.below code worked for me...

EXEC sp_fulltext_column       //Drop your column from full text search here
@tabname =  '<table_name>' , 
@colname =  '<column_name>' , 
@action =  'drop' 

 ALTER TABLE ... //Alter your column here

EXEC sp_fulltext_column       //Add your column back to full text search
@tabname =  '<table_name>' , 
@colname =  '<column_name>' , 
@action =  'add'