First off, I’m pretty sure that the error will occur irregardless of the data types involved, so redirecting the data may not be worth the time. Playing around with CSV import might make it a bit easier to manually create the tags you need.
As for other OPC servers, I usually end up recommending Kepware. It’s a very good/stable server, and our customers have always been happy with it. Beyond that, some other companies that make AB servers are Matrikon and Cyberlogics. You can take a look at the individual servers to see what features they offer compared to the others, they all run about the same price.
The biggest thing that people immediately notice when moving away from rslinx is the fact that browsing isn’t as automatic. That is, in rslinx, once you create a topic you can browse the device. In other servers, you may have to import memory maps or create tags manually if you want to be able to browse. A bit of a nuisance, but generally worth it for how much better the other servers are in general.
Hope that helps,