I have a vb form which accepts user input and constructs a Selection
Formula.  The program also has two dialog boxes, one to get the location
of the report file and the other to get the location of the database
file.  When I run my program, I get an error that says:

Error 20515
Error in formula

Then it points me to the line:
crptReport.Active = 1

Someone please help.

I have run into that problem before too.  There are several ways to get
that message.

1.) When I have several reports made for one application and in some
reports I pass formula values and in other reports I don't, I have to make
sure that all the formula indexes are empty before proceding.  

Example:

Report # 1 contains these formulas that I pass values to.
        CrystalReport1.Formulas(0) = "Formula1 = 'String Value' "
        CrystalReport1.Formulas(1) = "Formula2 = 123 "
        CrystalReport1.Formulas(2) = "Formula3 = 'Another Value' "

Report # 2 contains no formulas, therefore I must make the indexed formula
values empty, otherwise the error occurs.
        CrystalReport1.Formulas(0) = ""
        CrystalReport1.Formulas(1) = ""
        CrystalReport1.Formulas(2) = ""

2.) The formula name was incorrect.
                CrystalReport1.Formulas(0) = "FormulaName = 0"
should have been
                        CrystalReport1.Formulas(0) = "FormulaNames = 0"

3.) The value passed was an invalid type.
                CrystalReport1.Formulas(0) = "FormulaName = 0" was numeric and should
have been a string.

Hope this helps.

SMDavis