DOWNLOAD
The hotfix is available for download from the TIBCO Support Portal - https://support.tibco.com. 
Once logged in using your TIBCO Account, you can access hotfixes under the Download menu > Hotfixes > AvailableDownloads > Spotfire 

NOTES
Note that all Spotfire hotfixes are cumulative, so this hotfix also contains the fixes from all previous TIBCO Spotfire 7.8.x hotfixes.
For an overview of released hotfixes for the various TIBCO Spotfire products, please refer to https://community.tibco.com/wiki/overview-hotfixes-tibco-spotfire

CONTENT
TS-50819 - When opening an analysis we now load only the top-level producer for external tables.
TS-50877 - TIBCO Spotfire may terminate when filtering empty columns with range filter.
TS-50889 - TIBCO Spotfire may terminate when displaying geometries in table plot, if coordinates have value: NaN.
TS-50930 - Disabled map chart data layers should not access underlying data.
TS-51010 - A memory leak may occur in the KPI Chart, for example, if the user switches the page while the KPI chart is rendering.
TS-51015 - A memory leak may occur when highlighting.
TS-51022 - Pessimistic group-by metadata led to poor join performance.
TS-51026 - Data engine memory leak when filtering in listbox filter.
TS-51035 - TIBCO Spotfire may terminate when editing color rule using preprocessor column properties.
TSWP-11750 - A memory leak may occur, if the user is prompted (for example by export) long enough for two scheduled update reloads to execute.
TSWP-11755 - A memory leak may occur, if saving an analysis under scheduled updates and then interacting with another instance while the scheduled analysis is refreshed.
TSWP-11761 - A memory leak may occurs, for example, if interacting with analysis during schedule update refresh.
TSWP-11765 - Another memory leak may occur, for exampe, if interacting with analysis during schedule update refresh.
TSWP-11770 - Improved logging for finding memory leaks.
TSWP-11774 - A memory leak may occur, for example, if the user switches the page while a visualization is rendering.
TSWP-11778 - A memory leak may occur, for example, if a data function or an on-demand executes while a scheduled update executes.
TSWP-11782 - A memory leak may occur, if a background task does not terminate properly for an analysis under scheduled update.
TSWP-11795 - A memory leak may occur, if using images on cross table axis.
TSWP-11787 - A memory leak may occur, if interacting with an analysis during shutdown.
TSWP-11801 - TIBCO Spotfire may terminate when using Information Links that require credentials in a load balanced Spotfire Server environment.
TSWP-11808 - A memory leak may occur, if loading an analysis with calculated columns and hierarchies fails.

TIBCO Spotfire 7.8.x hotfix TS_7.8.0.34 HF-007 is now available