Would it be possible to discuss how to do this update? Some have indicated that the update is difficult but possible. I run a server with a 2 year or so old world running Direwolf20 1.4.7 and would like to update it to 1.5.2, but I'm facing significant problems. I have managed to get my server happily running 1.5.2 with my old world by simply doing the update, but I'm facing problems on the client side.
The killer problem I am having it that the minecraft client just crashes pretty immediately after the world is loaded. It gives a number of different rendering errors as an excuse. Help with fixing this would be very useful, as I'm really unsure where to start.
Another is that RedPower has been removed from the latest mod, I believe because it has not been updated to 1.5.2 and the mod maker has disappeared. This has caused massive damage to the server in terms of things going missing, but I'm told it may be possible to replace lots of this stuff with mods designed to replace RedPower. How to do this though, I'm not sure. I've tried using a tool called midas to replace some of the redpower blocks, but it does not seem to detect them all.
I'm willing to put the effort in to get this update working and hopefully find a way to get others to do the same, but I need help. Thanks.