I'm trying to classify images using multisvm. I get this error stated below. Please help

   "In an assignment  A(I) = B, the number of elements in B and I must be the same.Error in multisvm (line 20)

 models(k)=svmtrain(TrainingSet,G1vAll,'kernel_function','polynomial','polyorder',5,'kktviolationlevel',0.10,'method','QP');"

I made sure that the sizes of each input the multisvm is correct like for example I use group=multisvm(F,Y.',F1.'); as a command. Now the size of F is 5*96, size of Y is 5*78 and size of F1 is 96*1. PLease help! :(