In the mean time, if you download the tar.gz package of Java 7u21 or 25, and then set the java path of the mobile module to that location, it will work.
To accommodate the mobile module, I’ve been running Java 7u25 on my Ignition server for the past couple months even though Java 7u45 was the current version. For Windows, Java has now released Java 7u51. Am I safe in assuming that the mobile module won’t work with this newest Java update either? Ignition version is 7.6.2.
Secondly, is it possible to install the latest Java update at a different path and have the mobile module point to 7u25 while using 7u51 for everything else?
I'm not sure if it will work with 1.7.0_51, but I am going to make the assumption that it will not.
Is there a reason why you cannot upgrade your Ignition install to 7.6.4 since that release resolves this issue?
I have installed Java 6 and Java 7 on the same box and gotten this setup to work fine but I have not tried it with two versions from the same major release. It is possible that you may run into problems doing this.