Dave Scarpa wrote:
the effect were stilted by a non -existant budget, the story was also gimped by the budget, There was still too much insistance on Humor and especially Scotty suffered in the film by using his as Comic Relief, fans bitched about that then and now are alright that Simon Pegg's Scotty is suffering the same fate.
The budget was small, but the effects problem is due to the hard date set by the Studio and the fact that ILM was booked and could not do the effects.
The studio is also to blame for the bad shoe horned humor. The story was initially darker. But the studio wanted laughs cause it worked in the ST:TVH and drew more non Trek fans.