Chat to specified user will freeze the the spark application

Hi everyone,

Please HELP me with this problem…

I am using Win 8 OS and Spark 2.6.3, when our user chat to a particular user which also used a Spark, his spark application will hang-up (spark will freeze in its function). No problem when he chat to other user.

Thanks.

C:\Users\user\AppData\Roaming\Spark\user\user@server\transcripts\

find the offending history transcript (with the user which is freezing with) and rename it or delete it.