Game doesn't launch depending on machine

[Aeglen 170]

Backstory: In Summer 2016 I wanted to look at botting and tried using DreamBot (since it looked the most promising of the softwares), only to find that the game wouldn't launch. Instead I used the far inferior other-bot-beginning-with-p whose API honestly made me hate java... anyhow now I am having another go, with a new computer, something interesting seems to be happening:

This computer: Win 8.1, Java 8 32-bit. Dreambot hardly ever has any issues launching the game. There are never any issues launching the jar or client.

Other computer#1: Win 7, Java 8 64-bit. Dreambot only manages to launch the game ~2% of the time. There are never any issues launching the jar or client.

Other computer#2: Win 7, Java 8 32-bit. Dreambot hardly ever has any issues launching the game. There are never any issues launching the jar or client.

Note that lowering the RAM or restarting other computer #1 did not appear to help. Could this be an issue with the java being 64 bit? Will have to wait till tomorrow to change it. 

[Pandemic 2425]

Give JarFix a try:

https://johann.loefflmann.net/en/software/jarfix/index.html

[Aeglen 170]

Neither 32 bit java nor jarfix helped, but thanks. However, I tried launching from cmd and was met with the following:

[ERROR] Failed to connect to OSRS, retrying... (x10)

Failed to start InstanceWrapper!

log7j:ERROR No output stream or file set for the appender named [LocalFile].

[Aeglen 170]

Also note that <working machine> and <not-working machine> have exactly the same IP, firewall, etc and I'm not using a proxy.

[Pandemic 2425]

If you're not using a proxy, make sure you don't have any firewall or VPN active. For some reason it's failing to connect to OSRS. You could also try turning off any antivirus programs.