Well not anymore, after reading what sniper was saying in game about how there needs to be a minecraft mod that allows version switching, i thourght, thats a fairly good idea. Now the only problem with developing a mod for it is that with the new update the mod will be broken... However i have found a way around this!!

After about an hour of messing around with a batch file i have finally got a working answer. The batch file becomes the way you will start minecraft everytime. Rather than clicking on Minecraft.exe just use the Minecraft.bat file.

NEW VERSION INSTRUCTIONS...
If you have used version 1.0 if the switcher: 1st IGNORE WHAT VERSION THE PROGRAM SAYS YOUR RUNNING ON THE FIRST RUN, type U when prompted to update. This will put the 1.9 jar file in you bin and then set the current version of MC to 1.7.3. 2nd Run the switcher 2.0 again and press Y/N which ever you desire and you are done!!

If you havn't used v1.0 and this is your first time running the switcher: 1st Run the program 1 time and it should start minecraft. Update to 1.8.X and then close Minecraft. 2nd Run the switcher again and it will ask you "Switch version?" type "U" and press enter. 3rd run the switcher 2.0 a third time and you can switch between 1.9 and 1.7

To change back to 1.7.3, close minecraft and run the Minecraft.bat again. You will be told the current version of minecraft your running and then be prompted if you want to change versions, Typing "N" will just run the current version but typing "y" will switch the version allowing you to join the much loved 1.7.3 SPA server.

If there is any problems, there is a log.txt file that will contain a log of what the program was doing.

Read the "readme" file for step by step instructions.

***This will not make your saves Compatible with 1.7.3 once you update, this is purely to switch back so you can still access servers

UPDATE!! The new version is here, allowing you to quickly use the 1.9 prerelease and what not.
Basically use the version switcher 1.0 to set minecraft to 1.7.3, then run the new program and type "U" in the prompt. this will update it so u will have 1.9 in there to switch between. then run the switcher program 2.0 again and your home free

No working version is available at the moment...


OLDER VERSIONS This is 1.7.3 Unzip it and place it in the bin folder, DONT RENAME IT!

make sure you dont have something called 18.jar or 17.jar before you unzip it, and make sure the current MC version is 1.8

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

with 1.8 supposedly out, or for when its out, here is this, just to help you

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

Thanks

cd %appdata%\.minecraft\bin
--->Minecraft.exe<---
exit

Can I enter after the arrowed part my usual settings for Java memory size and the Autologin?

_________________

yea you should be able too, when you run minecraft does it rum the .jar or the .exe with these extra settings?

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

Both, I guess.

It looks like this

START /high java -Xmx2048M -Xms2048M -jar minecraft.exe Name Password

_________________

it dosnt seem to work, what version of windows, because windows 7 has a different command prompt version, on xp i did get it to run with

START minecraft.exe NAME PASSWORD

i will try implementing the java memory stuff

somthing cool i just discovered

START minecraft.exe NAME PASSWORD SERVERIP

and it connects you on startup

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

I play on Win7 64

_________________

oh, well i guess give it a try, maybe put pause one the next line to see if it throws an error, but if it works normally for you from a batch file, it should work

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

BUMP!!! 1.8 is released, please DownLoad and use this

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

Use what?? In search of The Missing Link.

_________________
Mincrafters never age, their stones just turn to cobble.

I think hes talking about the first post ;p

_________________
<@UNICORN_XD> i are a goast
<@UNICORN_XD> yes, having exams this week has made me stupid
Whiskers: Shoegaze music is great music to poop to - I feel like I've just fought an epic battle

Works perfect! Thanks and great job man

saved me!

thanks mbl!

_________________
“If it means interfering in an ensconced, outdated system, to help just one woman, man or child…I’m willing to accept the consequences.” -Wonder Woman #170

no problem guys, although... i should probs make an updated version so you can mod your 1.8 clients and it will still work with a 1.7 modded client

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

This.. didn't work for me, It updated to 1.8 and stayed that way...

Error:
Minecraft Client Switcher Version 1.0
By mbl111
Sun 09/18/2011
09:19 PM
Can not determine current minecraft version if you havn't run this before ignore this error
Starting Minecraft
---------------------------------
---------------------------------

What I did:
1. Ran the .bat file
2. Upgraded to 1.8.1(Does that make a difference?)
3. Closed minecraft and attempted to run it again
4. Got the error without a y/n choice

hmm, tell me all the .jars in your bin folder

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

jinput
lwjgl
lwjgl_util
minecraft

That's all the jars in the bin file.

hmmm, idk, but u will need to download a 1.7.3 jar, i will post that in the first post

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

Thanks, I'll try again.

You can make this work with the new 1.9 pre-release jar. Make sure your switched to the 1.7 jar.

1. Download the pre-release jar here: http://www.minecraftforum.net/news/230-19-is-out/

2. Place the jar in your bin folder:
-Hit start
-Hit run
-type in: %Appdata%\.minecraft\bin
-copy new minecraft.jar into folder
-If it asks you if you want to replace, select "move, but keep both files"

3. Then rename the new minecraft.jar file to: 18

Done!!

Note: The switcher will still say 1.7 or 1.8 but just remember 1.8 is really the 1.9 pre-release.

Thanks for that GB3
There really isnt a point doing 1.8 anymore cause the server is gonna skip to 1.9 at this rate, and 1.9 will officially be out too soon

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

lol no problem, and i would start working on a version that says whatever version you have

That way theres no confusion, maybe add an option to say like when theres an update:
Do you want 1.7.3 and 1.8 to continue(y/n)
Do you want 1.7.3 and 1.9 to be the switcher(y/n)
Do you want 1.8 and 1.9 to be the swithcer(y/n)
And so on, shouldn't be to hard, just a couple more file renames

... not to mention all the versions between now and full release 1.0 in November. Countless, as in also pointless, he's just going to keep breaking everything until the final product is even more fubar than it is now.

_________________
Mincrafters never age, their stones just turn to cobble.

well considering 1.9 is almost out and the server will be 1.7.3 i will keep it as 1.9 or 1.7 as the 2 options. I might make it so that it keeps 1.8 (labeled 18.jar) and switches between 1.7 or 1.9

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

UPDATED!! Please read the first post

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube

Eh... Well the server is now 1.8.1 i need to go edit this again, DONT RUN THE VERSION 2.0!

_________________
jhvirik: you... get new one befour I get red in my face of hate
saintk: you have to send a DNA sample to Google these days in order to be able to reply on youtube