My solution, my friend, was for un-hiding the hidden icons. And the response was
for those who had that particular problem. I also came across
with your problem once or twice while i was messing around with my iphone.
I think that the problem is caused by the number of icons installed with
the app and probably the icons installed by user (icon pack V1 for categories),
or maybe the adds that keep running at the bottom of the app while the selection
of a particular icon for a particular category (probably a memory issue).
My solution was to ssh into the folder : root\Applications\Categories.app\icons
and deleting all the unnecessary icons leaving only the ones i needed.
Then i would run the app again making the categories and creating one by one the categories.
I think the key to this solution is making small steps at a time. That means ...
creating a category ... inserting apps then respring and then creating a new category.
Or creating all categories at once ... respring and then fill up every category with a respring for each one everytime.
For those icons that keep staying on your springboard , the spoof app would do the job.
I would recommend SBsettings or Bossprefs but not both at the same time.
P.s.Excuse my English its not my native language
