So I finally managed to get the Cobble Stone road upgrade just moments ago. I had saved up gold and supplies to build a fair amount when the time had come. I toggled it to place cobble roads over my gravel for as many as I could make with my gold/supplies, which was roughly 20 tiles worth. However when I did so they all seemed to get stuck in that construction phase. I refreshed my browser and found that they had all been reverted back to Gravel and my gold/supplies taken. Now I am stuck with my old roads and half a days worth of cash down the drain.
Is there any way to get a reversal for my purchases or am I just screwed.
Lesson learned though, don't upgrade roads in large quantities in one sitting.
edit: Strangely, it appears my funds were refunded recently. For what ever reason it just took like 30 mins later to reveal this. Disregard my problem I suppose, but still a strange bug to say the least.
Also, no I did not receive an error like others seem to get with their road problems.
second edit: this time I did receive an error and yet again it took my funds but left the old roads >< Guess I'll wait to see if I get my funds back.