<span class=”handle-sign”>@</span>ahetherington9113 – I am currently using v.18.0.1 and recall having no issues with the move from v.17 to v.18; it’s even relatively hassle-free to load up old courses in v.18 (from v.12 even) to update them to v.18. No major concerns from my perspective, but I cannot advise on v.18.1.1, as I have not upgraded to that yet.
If I remember right, v.18 did not overwrite v.17, but created a separate folder and file system. So, for a while there, I had v.17 installed to fall back on just in case, but never actually needed to resort to it.
Best of luck!