The AeonCreateUserAccount script is limited to navrchar(15) which will be problematic for custom installs that may try to set longer passwords.
Bug# 64960 votes
A problem during implementation where they are saving the researching tags to the database. When the researcher tags are not properly encoded some characters can result in exceptions in the web DLL. In particular, it seems that the '=' character in a researcher tag causes this issue.
Bug# 43560 votes
When creating Aeon's BillingDefaults table and you enter a row into the table that maxes out the MSSQL fields, you will receive the following error:
Warning! The maximum key length for a clustered index is 900 bytes. The index 'PK_BillingDefaults' has a maximum length of 1120 bytes. For some combination of large values, the insert/update operation will fail.0 votes