Thanks for getting back with me.

I will try this on multiple computers, in multiple networks and get back with you shortly.
Tried multiple computers, all Windows 7 64bit, with latest java installs, at home network, friends, and at public wifi areas.
Having this problem still. Tried to login 84 times now, still waiting for the one that succeeds...
Code:
[Debug] RuneMate Version: 2.4.2
[Debug] Java Version: 8u111 x86 (Oracle Corporation)
[Debug] Operating System: Windows 7 x64
Exception in thread "Thread-11" java.lang.IllegalStateException: Not a JSON Object: null
at com.google.gson.JsonElement.getAsJsonObject(otb:70)
at nul.IIIiIIiiiIII.int(nma:9371)
at nul.iIiiiIiIiiIi.int(hsa:5728)
at nul.iIiiiIiIiiIi.float(hsa:7715)
at java.lang.Thread.run(Unknown Source)
Will offer 100m RS3 reward for anyone who can help solve this...
[update] 85th attempt was success. finally. but problem still remains for future attempts.
Still getting these errors.... Takes hundreds of attempts to successfully login.
Happens on different networks & devices.
Code:
Exception in thread "Post Login Setup" java.lang.IllegalStateException: Not a JSON Object: null
at com.google.gson.JsonElement.getAsJsonObject(alb:89)
at nul.iiIiiIiiIiIi.getProperty(zza:201)
at nul.iiIiiIiiIiIi.getProperty(zza:41)
at nul.iIiIiIiIIiii.float(fpb:25)
at nul.iIIIiIiIiiII.super(dna:20632)
at java.lang.Thread.run(Unknown Source)
Code:
Exception in thread "Thread-13" java.lang.IllegalStateException: This is not a JSON Array.
at com.google.gson.JsonElement.getAsJsonArray(alb:171)
at nul.iIIIiIiIiIIi.float(sma:226)
at nul.iIIIiIiIiIIi.run(sma:137)
Unable to load 1 accounts into the account manager
Instance failed to start for the following reason: Session does not exist or has expired. Please restart.
Code:
Exception in thread "Thread-11" java.lang.IllegalStateException: Not a JSON Object: null
at com.google.gson.JsonElement.getAsJsonObject(alb:89)
at nul.iIiiiIiiIIIi.float(dqa:20095)
at nul.iIIIiIiIiiII.float(dna:13295)
at nul.iIIIiIiIiiII.int(dna:20754)
at java.lang.Thread.run(Unknown Source)
Code:
Unable to load 1 accounts into the account manager
Failed to receive Cloud Constants. Please try again shortly or report the issue in <a href="https://www.runemate.com/community/forums/client-site-support.69/">Client Support</a>.
Code:
Exception in thread "Thread-11" java.lang.IllegalStateException: Not a JSON Object: null
at com.google.gson.JsonElement.getAsJsonObject(alb:89)
at nul.iIiiiIiiIIIi.float(dqa:20095)
at nul.iIIIiIiIiiII.float(dna:13295)
at nul.iIIIiIiIiiII.int(dna:20754)
at java.lang.Thread.run(Unknown Source)
<a href="https://www.runemate.com/community/forums/client-site-support.69/">Client Support</a>.
Code:
Exception in thread "Post Login Setup" java.lang.IllegalStateException: Not a JSON Object: null
at com.google.gson.JsonElement.getAsJsonObject(alb:89)
at nul.iiIiiIiiIiIi.getProperty(zza:201)
at nul.iiIiiIiiIiIi.getProperty(zza:41)
at nul.iIiIiIiIIiii.float(fpb:25)
at nul.iIIIiIiIiiII.super(dna:20632)
at java.lang.Thread.run(Unknown Source)
sonObject(alb:89)
at nul.iiIiiIiiIiIi.getProperty(zza:201)
at nul.iiIiiIiiIiIi.getProperty(zza:41)
at nul.iIiIiIiIIiii.float(fpb:71)
at nul.iIIIiIiIiiII.super(dna:20632)
at java.lang.Thread.run(Unknown Source)