Sage 100

Upgrade to v2018 Std. from v2014 Std. Have several custom Crystal reports created on much earlier versions attached to Sage 100 custom reports menus and ones with numeric parameters are giving ""Unspecified error"" message. Sage KB89925 says to convert the parameter to a string. An example is a report that prompts for a month where month is a numeric parameter, changing the parameter to a string doesn't resolve the error. Can anyone give me some details on what to do?

How easy is it to rewrite one in v2018 just to see if that really is the issue?

You could try deleting the parameter and adding it back by first replacing all uses with a date constant. Replace the date constants with the new parameter.