I think that was errata fixed in RM2 and RAW in RMSS, I know it's in RMC SL P87:
"When a caster attempts certain magical effects (e.g. Item Analysis, Remove Curse, Etc.) that caster may attempt such an action on a specific item or situation only once per experience level. If the attempt fails, another attempt may not be made until another level of experience is attained."
It ads a 2nd proviso that some GMs may require the list to actually have ranks purchased in it before it can be tried again, so simply going up a level and not ranking the list with the spell on it is not enough to allow another attempt.
On the house rule end, I have allowed someone to just cast over and over vs spells, but those games tend to make things like curses far less nasty.