Hello, I have a 32bit PC and the OfficeIRC messenger is not working on it, but in all 64 bit PCs it does.
If it works on 64bit, then it means you have the 64bit version of the software. Sometimes you can run 32bit applications on 64bit OS and not the other way around. You need to obtain a version that was developed especially for that particular architecture.
Download the latest installation package from the website and it should work properly. You can find the link below to save the installation pack.