2.5.2 invalid input checkwhitelist

[SowjanyaReddyGade]

I am getting following error:invalid input , see the header value.
Same code is working for 2.1 version, when i upgrade to 2.5 it does not work.
Also I noticed asterisk from the regex is being removed when I post in this comment, not sure why. That's why i am attaching screenshot of error.

I have the 2.5.2 ESAPI.properties file in the classpath.
Following is the code that makes call to ESAPI api:

HTTPUtilities hTTPUtilities = ESAPI.httpUtilities();
hTTPUtilities.setCurrentHTTP(request, response);
hTTPUtilities.setContentType(response);
hTTPUtilities.getCurrentResponse().setContentType(CONTENT_TYPE);

Encoder encoder = ESAPI.encoder();
String encodeFileName =  encoder.canonicalize("attachment;filename=\"" + fileName + "\"");
hTTPUtilities.addHeader(CONTENT_DISPOSITION_KEY, encodeFileName);
FileCopyUtils.copy(file, response.getOutputStream());