Cannot initialise the map

[Diane]

Everything was working swimmingly well until recently but when I tried to use RouteConverter a few days ago, I got the following message:

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Could not initialize the map
Possible solutions:
1. You are using a ?-bit RouteConverter with a 32-bit Java which is not compatible. Download a RouteConverter version that matches your Java version.
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So, my question is, why has this happened and which version of RouteConverter should I download?

I have a 64-bit OS system and Java seems to install regular updates without noticing me (latest one possibly on 14/07/2014).

Thank you.