Wav Files In Exs24, how to convert WAV files in EXS24? Options

[pirque]

I have a Mac G4 and use Logic Platinum 6.3.3. with the ESX sampler but when I try to convert WAV files (through sampler editor, load multisamples, chromatic and save as sample instrument) they are on my hard disc and when I select them in my EXS24 smapler it says: can't find file. When I click open the sample editor than I can see all samples but don't hear them.
Does anyone has experience with this?
What is the trick?
thx
Pirque