Question : SSIS package error trying to open

I get the following message attached after renaming a package. Now I can't get into the solution. Anyone know how or if I can change it back or how this occurs? Is there an xml file I can edit and repoint this? Just wondering mahalo  

error.doc (29 KB) (File Type Details) 

Error file

Answer : SSIS package error trying to open

If you are testing for the exact string, then you can add the start/end of line markers:

1:	^(?:100|\d{1,2}(?:\.\d{1,2})?)$