No, this is because you downloaded the real life version which has a number of modification scripts to change the values which is "fixable" without restart.
Just be aware that contracts which are 15k will now be in the ballpark of 150k or close to a million depending on the field size and economy before making this change if that throws you off.
If you have an active save in progress and dont want to lose time do the following: (if not go find and download the light version of this map which doesn't have these real/* scripts but is essentially the same.)
Save your game files as well as the original mod before proceeding:
Extract the map zip and open moddesc.xml
find this
<sourceFile filename="Real/RealNumbersCalendarInfo.lua" /> <!-- do not comment out this one -->
<sourceFile filename="Real/RealNumbersSprayTypes.lua" />
<sourceFile filename="Real/RealNumbersLeasing.lua" />
<sourceFile filename="Real/RealNumbersContractRewards.lua" />
<sourceFile filename="Real/RealNumbersLoans.lua"/>
and comment any of those four with <!-- original text --> excepting the first. Then rezip the entire mod and replace. use something like better contracts to regenerate contracts and the effect will be immediately noticeable.