Much of the ground work on making K-Meleon portable was done, I believe, by Douglas with some help from Dorian. The KM1.5a"x" versions (what ever update you use, update 1 or update 2, or Build21) can be made portable in the same way as the previous versions - and it works very well.
For details on how to do this, see Douglas' site, here, or see Jujuland (Alain's site), he
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