how to solve the error while adding new classes

Question

hi i am new to iphone. what i did is creating two different applications individually, now what i need is i have to combine these two applications as single application by using tabbar controller.But while adding the second application classes to first classes it shows the error

• Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

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i can't understand what is it and one more is shown as

• Duplicate Symbol _count in
/users/ensisinfosolutionscom/Desktop/abc/build/CustomImagePicker.build /Debug-iphonesimulator/CustomImagePicker.build/Objects-normal/i386/numbers.o and /users/ensisinfosolutionscom/Desktop/abc/build/CustomImagePicker.build/Debug-iphonesimulator/CustomImagePicker.o

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here customimagepicker is my class name. icant understan what is this error pls help me. thank u in advance.

Answer 1

This looks like you are lacking some library

Answer 2

Sometimes searching helps, your question is answered here: http://stackoverflow.com/questions/2264455/iphone-duplicate-symbol-error